You'll need the following :
MkI or MkII G'box and front part of the prop (each is different)
Clutch Pedal
Clutch Master/slave cylinder and piping
Flywheel/Clutch
Modded G'box rear mount
The rear diff is different but I had an Auto in mine, gives better 0/60.
You have to disconnect the Tranny ECU in the rear and the Radiator coolant pipes. Plus I think the plug on the TPS.
I think thats it...