its a very simple swap. no problems at all
the only problem i see wil be your exhaust as the GT has cut outs so you will have to raise your mufflers to center them within the cut-outs.
Saleen S/C 3.2 pulley. Chris Rose tune.
Hot Rod cams, GT500 pumps, CHE goodies on the rear, 4.10's, KOOKS/ O/R X pipe with PYPES Violators, Spydershaft, TCI 3500 stall, PA deep tranny pan. Meziere w/p,M&H 325/45/17 DRs.