Cloning a 01 GT to a 03 Cobra - Ford Mustang Forum
 
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post #1 of 6 (permalink) Old 06-08-2014 Thread Starter
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Cloning a 01 GT to a 03 Cobra

Hey,

I am cloning my 01 GT. I have (what I think) is everything I need from the radiator to the drive shaft. Questions: Will my 01 headers and exhaust fit, and do I need to change to IRS? I appreciate any advice. Thanks, Steve

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post #2 of 6 (permalink) Old 06-08-2014
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You do not need to switch to IRS. Do you have the complete drivetrain, including engine, transmission, and driveshaft? You will need Cobra headers and midpipe, but if you stick to the SRA (Solid Rear Axle) you should be able to use a GT catback. I might be wrong about the exhaust though, but if you search around you should be able to find an answer to that. Are you getting all the parts from a donor car?


2003 Mustang GT
Intake & Exhaust: K&N FIPK CAI, Mac O/R H-Pipe, Custom Catback w/ Magnaflow Magnapack Mufflers.
Suspension: H&R Super Sport Springs, KONI STR.T Shocks & Struts, J&M Caster Camber Plates, Steeda Bumpsteer Kit, UPR Elite LCA's & UCA's.
Performance: BAMA 93R Custom Tune, FRPP 4.10 Gears w/ Terminator spec T-Lok.
Planned Mods: FLSFC, Eibach Sway Bars, Throttle Body, Plenum, Rims.
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post #3 of 6 (permalink) Old 06-10-2014
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Your headers will not fit the DOHC heads. Your mid-pipe, I believe, will not fit either; however, if you have longtubes on your GT than your shorty-midpipe will probably fit if you get longtubes for the DOHC Cobra engine. If you keep the SRA, your GT cat-back will fit. If you do an IRS, you will need a Cobra cat-back.

You do not have to have the IRS, unless you are tring to build an EXACT clone of an 03 cobra. Something to consider, is that a lot of the 03 Cobra buyers did an SRA swap for better durability especially in drag racing applications. With an IRS you will have a bit better ride quality on the street, but nothing so significant to warrant an IRS swap.

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post #4 of 6 (permalink) Old 06-10-2014 Thread Starter
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Hey, thanks for the help. I got the complete drive line; radiator, engine tranny, driveshaft, fuel tank,lines and pumps from a wrecked 03. I have a set of Hooker long tube super comps and an x-pipe. I was hoping I could connect that to the rest of my old exhaust.
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post #5 of 6 (permalink) Old 06-10-2014 Thread Starter
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Anything weird I need to know about the front end? Will that motor drop right in?
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post #6 of 6 (permalink) Old 06-10-2014
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Quote:
Originally Posted by stephen_bernasc View Post
Anything weird I need to know about the front end? Will that motor drop right in?
Once you are in there I would suggest you invest in a tubular K-member and new motor mounts. It will shave 50-100 pounds off of your front end, and make it more rigid. There is no better time to replace it than now!

2003 Mustang GT
Intake & Exhaust: K&N FIPK CAI, Mac O/R H-Pipe, Custom Catback w/ Magnaflow Magnapack Mufflers.
Suspension: H&R Super Sport Springs, KONI STR.T Shocks & Struts, J&M Caster Camber Plates, Steeda Bumpsteer Kit, UPR Elite LCA's & UCA's.
Performance: BAMA 93R Custom Tune, FRPP 4.10 Gears w/ Terminator spec T-Lok.
Planned Mods: FLSFC, Eibach Sway Bars, Throttle Body, Plenum, Rims.
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