Mk3 16v mounts. Gearbox + front ones are differant.
Driveshafts fit from gti etc all fit the mk3 16v gearbox you need. Im not sure about starting with a 1.4
So if you used gti shafts youd be good, replace the hubs etc at same time to 5x100 for the biger brakes too
Theres a thread if you check, its got the full list of parts needed
