main thing to note is the universal joint is different on PAS cars, apart from that you got a couple brackets etc but these are probalby still bolted on somewhere. You could use MK3 bits too, though the reservoir needs a bit of work to mount up, and the rack would need the track rods swapping for MK2 ones.
Is the rack still fitted or was a manual one shoved in there, because a rack swap is one of the more difficult things to do especially with the engine still fitted!