Qualified mechanic about a day or two, depending on how much he wants to rip you off.
Engine, gearbox, engine loom, alternator, mk3 subframe? (maybe Toledo/Ibiza subframe) MK3 drive shafts. you might be best off buying a scrapped MK3 VR6 with a known good engine and using bits you need as you go along rather than getting bits and then realizing you still other bits and so on...
I'm sure some more experienced people will add to my list above.