I have an old beat up z31 I want to murrica swap. Easiest thing would be just mate the engine to stock tranny since it can take the power ( FS5W71C good for 400+ hp) but no one makes an adapter. Second option is put in an engine and tranny but then I'd have to fab up tranny mounts as well and get a driveshaft long enough and that can mate to the diff. Finally I could go full retard and swap the diff in as well meaning the drive shaft should be ok and I would have an lsd (stock diff is open) but it would be a nightmare either adapting the stock half shafts for the diff or adapting the new ones for the suspension, but it would remove the risk of the stock ones snapping. Wat do? Try and custom make an adapter? Just go full retard and spend a year on what I want to be a shits and giggles weekend project?