Hi all, here the setup on the car: 91 coupe, bbf 557 w/c6, complete QA 1 front kmember, coil overs, a arms. Rear is UPR coil overs (think 130lb) with 50/50 shocks, and anti roll bar running 28x10.5x15 with 6.5bs on 15x10s. One of the problems we're having is the rear fenderwells are almost sitting on the slicks, he hasn't rubbed them yet, but haven't been able to take off hard with just foot brake, transbrake is coming shortly. We have the coil over turned all the way up, but this is the most we can get, do I need a heavier spring? Second problem is the back end of the car seems to be all over the track at the top end, wanting to tighten that up just don't know what to do. Thanks all in advance, any help/suggestions would be appreciated.