c6 rear will require a full tilt build of the suspension, do a search on the board and check tylers 1.gen at ironworks.... ita no small matter to do a c5/6 rear.
http://www.ironworksspeedandkustom.c...s.php?album=32
i have helped do a jaguar IRS in a 1.gen and it can bolt in without any floor cutting if you fabricate the right brackets.... (i dont have a 2 gen at my disposal. and the shipping would be costly, but i could build you a set of brackets without braking the bank if i found a 2.gen to build it on)