enough boost is when you have 3 dimple marks in the hood from the valve cover nuts..
All is with the wrecked passat for the tranny except I think the pedal box will need to be from a golf/jetta. My car is a MK3 with 100mm cv's already. Slave, line and all clutch related parts should be there except the pedal box will be needed.As for the engine it looks like a aaz will work as a tdi with a tdi head, possibly new rods or ahu or ahl rods, pistons, tdi injectors and mtdi pump.
One question I had - with an aluminum flywheel and 02a style clutch, with the rotating mass be heavier than an 020 clutch?