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Parts swapping for 73 mustang.

1516 Views 9 Replies 4 Participants Last post by  73 351Q
I just started a large total restoration project on a 73 mustang. I know I can swap rear disc brakes from a 94 to 98 mustang to fit my 73. Was wondering about other swaps such as a rack and pinion or maybe even a k member or sway bars. If I can save money scavenging bone yards instead of buying everything new will save me tons of money. any help or ideas will be greatly appreciated!
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Perhaps I can save you a bit more $, time & effort.... the oem suspension is literally as good as it gets.... while some may make other claims, let's face it, the newest ferrari uses a double wishbone front suspension.... so they are not out of date by any means. I road-raced the pony cars (mustang specific) in the late 70's in SoCal, and although you have a 73, it's literally the same chassis/suspension set-up and I can suggest this.......IMHO I preferred the oem style suspension to the Mustang II or most any of the R&P conversions....much more stable, responsive & consistent....and with a little massaging of the oem components, the car will drive excellent for most any need

There are several excellent assessments of oem vs aftermarket suspension for the mustang…

01-20-2013, 03:19 PM by dav65mus

I had a MII kit in a 65 fastback I built. Unless you are doing a big block/mod motor/ls swap and need the shock towers removed any MII kit is a mistake. I have been experimenting with different suspension setups along with frame connectors during the last 15 years on 3 different 65 mustangs. The MII in a fastback, ron morris complete coilover conversion in another and stock suspension in another. After driving all 3 my conclusion is stock suspension with poly bushings, roller perches, progressive rate coil springs, and good shocks will handle as well as any other aftermarket system at a fraction of the cost. As far as steering, the borgenson conversion feels very "rack & pinion" like without the high cost, turning radius issues, and exhaust clearance problems that rack & pinion retrofit kits suffer from. You can improve the handling of your classic but you will never get the feeling of a modern car like your focus without building an entire streetrod type rolling chassis and fitting your body to it. I have been there and tried that and kept my bank account emptied trying to get modern car handing and feel.... wish I would have spent less money trying.

Poste by 22GT
There is no inherent handling advantage to the Mustang II front suspension. It's main advantage in 64-73 Mustangs is it allows the use of really large engines, such as the 4.6 DOHC. A properly set-up stock suspension can easily out-handle the MII setup. Simply doing these items from TXMAG's list would be superior to typical MII.
Arning/Shelby Drop
Roller Idler arms
Good rebuild or new steering box
Performance alignment
Roller UCA/LCA
Front sway bar around 1" in size
Monte Carlo Bar
Export Brace
Eliminating the shock towers also often eliminates a lot of triangulation bracing. Haven't seen your car, but I've seen a lot of MII conversion cars at shows that had less front end rigidity than a stock six-cylinder coupe. Sometimes people use fancy-looking cross-bracing with Heim joints to make up for it. Excuse me for pointing out the obvious, but a Heim joint is a pivot, designed to flex. Kinda the opposite of what you'd want in a chassis brace.
This is also a more recent discussion started as a rant by a suspension engineer.

I hope this helps.......
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the 71-73 models offered two suspensions. all the four speed cars came with factory installed competition suspensions. you can identify by looking at the rear, the left shock is behind the axle, and has a rear sway bar, stiffer rear springs, 9 inch traction lok differential, and i believe it had a heavier front sway bar. this suspension could also be ordered on automatic cars. if yours has this suspension, don't mess with it, just repair as needed and drive it. they handle pretty well.
I already know I have the 8 inch differential. I guess what I'm looking for is some kind of literature that can help narrow down searches for late model swaps into early model cars with the least amount of fabrication. Like swapping out axles differentials coil springs etc. Junk yard shopping is fun. Would just rather bring home the right part the 1st time.
that's beyond me. i'm the guy that wants everything to be as stock as possible. the question is, what do you want to accomplish with the car, and why do you want to modernize it? is there something you want to do with the car that stock components won't handle?
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I have nothing against stock. Just happen to find a shell of a 73 mustang. had a rusted out 91 t bird laying around with a perfectly good HO motor and trans. now it's just a matter of finding enough parts to put together a running car. That includes finding everything from a dashboard to brakes to a windshield washer reservoir. from the very beginning this car could never be stock. So now I'm just looking for parts that can fit and if it can be modern then that's ok too. Ideally I'd like to keep it all Ford but I'm not against throwing Lamborghini bucket seats in it if I find them. It's starting to seem if someone can come up with a parts reference book that says a 2001 Chevy Camaro dashboard can fit in a in a 72 dodge dart or whatever part then that might be a money maker. otherwise it looks like I'm going to go through a whole bunch of trial and error with this project.
ok i get it. have you checked salvage yards for a 71-73 parts car? many yards are hooked into a national network for finding parts. 30 years ago i found a yard north of tulsa, had a ton of old fords sitting there. i went for more than 30 years without a ford, i was concentrating on harleys, but got back in about 3 years ago, so i'm a little out of touch with the ford world. now i have two, my mustang, and a 73 LTD with 40,000 original miles, all original, and 99% mint, so i'm getting back in now that i've retired. the more original parts you can find, the less work it will be. many of them came with power steering and brakes, so you can still have some amenities without breaking the bank, and more importantly, to me at least, is a lot less cutting and welding. there is also a place called Yogi's, which is about 25 miles from where i live. they supply a lot of street rod parts, like universal steering columns, mII brake systems. their catalog is a good place to get ideas, you can order one on their website
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I'll look into yogis. Good to know. unfortunately I'm in Chicago and the boneyards in Illinois stopped allowing self pick and pull due to the covid thing. I think they might be opening up again soon and I'll definitely be checking out boneyards again. Thanks for the yogi lead.
i just did a search on web for ford salvage, came up with some salvage sites with nationwide parts locators also check out sites like, they have a salvage yard, list of swap meets, stuff like that. also, monticello iowa, where yogi's is at, will have a swap meet oct 18 at the fairgrounds, i saw some mustang parts there last year. it's about 4 hours from chicago. it's not a huge meet, but might find something, or make some connections
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