The Toyota Supra RZ from NFS Carbon.
No custom handling, here's my vehicles.ide line (uses SuperGT handling):
supra, supra, car, SUPERGT, SUPER, VEH@LOW, NULL, 50, 5, 0.2747, 0.2747, 0, 5, 1.0 ,0, sports
Known issues:
Doors don't work properly (NFS Carbon doesn't have properly seperated door models, so only the outside part of the door moves)
Detached/moved components reveal huge holes in the car mesh (NFS Carbon's cars weren't designed for IV's damage model)