I've done the swap as well and I had no clearance problems with my hooker long tube headers. May have to fab a bracket to keep the cable free of any problems. The tranny sizes are practically identical. The shifter lines up perfectly with no mods. Will need to buy a crossmember, tranny mount, clutch pedal, yoke (if you don't have the donor car) and clutch cable. If you reuse the late model cable you will need an adapter because one is pull and the other push. You will also need to shorten the drive shaft 1/2-3/4". Pretty easy mod and well worth it!