I tried posting this over in Suspension but didn't get any bites, figured I would try here with hopefully some better luck....

I recently got back into a 3rd gen F-body after being into offroading the last 10 years. I purchased a '91 Firebird with T-tops and am planning on just cleaning up the car a little and doing some road racing/street driving with it. Nothing serious, but want it to be respectable the once or twice a year I take it to the track. I have a garage going through it now to check everything over and they called to let me know that it needs a rear floor pan (no biggie) and both inner rocker panels replaced. The rocker replacement I'm a little more concerned, but I have an idea....

In the spring time, I am going to have 603 Chassisworks fabricate some custom subframe connectors for the car. Since I need to replace the inner rockers anyway, would I be better off cutting the entire rocker off flat just below the bottom of the door and having the subframe connectors go all the way to the outside of the car? Think 1 3/4" round tube or possibly 1.5" x 3" rectangle tube connected to the floor boards, door sill, and A and B pillar areas and then tied back into the control arms mounts. With the ground effects the 91/92 'birds have, I could make some tabs to remount them so you visually wouldn't see anything different. I'm thinking this would stiffen the whole car up pretty solidly and not lose any clearance (big issue in New England).

I'm still researching and am far off on needing to decide one way or another. Just wanted to put it out there and see if there are any usefully creative ways to replace the rockers.

On a side note, if you know of any places that sell replacement inner rocker panels for 3rd gens, please let me know.

Thanks,

Ken

 

That could be easily done and would probably work great for what it sounds like has to be cut out already. FlyDoc did something similar when he put his IRS Corvette axle in, start at post #48

https://www.thirdgen.org/forums/susp...e-c4-rear.html