i did this conversion to the point where it was in the car but then we ran out of storage, there is a lot of work involved mate. The engine bolts straight up to a mk4 gearbox which saves a lot of work but then you need to fab up a rear engine mount and make an arrangement for alternator etc for no PAS.
In saying that, I sold the engine to a mate who put it in a mk3 fiesta and christ does it shift, and the noise off it is awesome, sounds raspy like a Vauxhall red top but whit more attitude