Ok, I made some sub frame connectors....First, I removed all the carpet and seats so I wouldnt catch them on fire, put the driver seat back in and drove it before installing the SFC's, there was so much rattling, I thought the car was literally going to fall apart, its amazing how much noise is absorbed by the carpet and seats being bolted in . After the install, I drove it with the interior out, and not even a rattle anywhere, huge improvement, even quieter than with the interior!!! I can just imagine that a launch on slicks will be a whole new experience. (I hope)
When I used to push on the front end the back end wouldnt really move, now it is so solid it has a teeter effect because of the rigidity.
I made them myself for 30 bucks, I used 2" x 1 1/2" tubular steel with .125 (1/8th inch) wall thickness. I cut and welded the tubes and made roughly 4 degree bends, I used the car as a template obviously, but it turned out to be around 3-4 degree bends, so that both sub frame mating areas were absolutely flush with maximum center ground clearance, actually this is a must, otherwise the front and rear wont mate without plates or bending and you must have the car on its suspension when installing..
Here are some pictures, I'm done for now, but if in the future I decide to do more, I left enough room to weld some beefy plates to the top of the SFC's to tie into the seat area and possibly even in the back portion. I may fabricate my own torque box reinforcements. I just hope I did an adequate job. I'm my own worst critic, but the welds came out clean for a novice welder such as myself. I had to practice running beads, before I did this. lol Try not to laugh at my welds, it was actually quite difficult as the sub connectors are flimsy compared to the connectors.
I just thought I would share, this has got to be the best and cheapest mod ever. I don't know why I didn't do this a long time ago. I would go as far as saying this should be the first modification one should do on an old Fox, a lot less chassis flex and I am sure more efficient power transfer to the back, where it belongs. I was just so amazed by how solid the car feels, its quite exciting. And on my practically no budget race plan, I thought the DIY SBF's were a success.
Now I will see if I can lower my 60 ft. time (1.87), I'm thinking it should. I have about 200 HP, but how much energy was I losing with the chassis flex?
EDIT: Ugh those are terrible pictures.