I'm sure RubJ has already told you PAS setups and Electric window gubbins are a must.
U takin the piss eh?

Its a bit late, but heres my short list:
Variable intermittant wiper relay from a MK3/Passat (#99)
Early Passat/Corrado leccy mirror loom/motors & switch will also fit, look for the square switch in the door. Glass is different though.
Early Corrado/Passat leccy window loom has auto open/close too, very

Again, look for switches mounted in the door card.
MK3 black washer piping, looks much nicer than manky yellow MK2 stuff
Fiat punto rear wiper arm, smoooooth
MK3 stalks if you have a 90 spec MK2
Tinted interior light, rare

Late MK2 hard plastic scuttle trays