Thanks for the replies....well, I got news. My 2001 Cobra sure as hell launches now, with what I've done to the suspension. The last really significant mod needed for an IRS Cobra to make the rear end hook up is the #4 Differential Crossmember, which was developed on the FR500. Actually, probably originated with Kenny Brown....and I believe it is a stock part now on 2003 Cobra's. I don't even know, though if I need it, 'cause my 2001 Cobra is a monster coming out of the hole.