engine query

[mrmiggers]

i thinking about changing my 1.8i 4 pot to a healthy 6 pot engine is this a impossible task or can it be done if so what do i need to do i have access to a 6 pot doner car

sorry if this sounds stupid but need to know

[Brianmoooore]

All perfectly do-able, especially since you've got a donor.
Only thing on the shell that won't fit is the bracket for air filter, and no stud and socket for the radiator header tank.
You will need the engine, gearbox, radiator,engine wiring loom, ECU, exhaust and propshaft and preferably the diff (318 a bit high ratio), the front struts and springs (struts are larger diameter, springs are stronger, engine is heavier), and the rear suspension with discs would be nice too.