basically you will need
ga16 engine/gbox
custom driveshafts( usually the passenger side one only needs shortened)
custom gear linkages
custom subframe
non nats ecu
uprated suspension
some decent brakes ie pulsar brakes
and some decent wheels with half decent tyres
custome made exhaust downpipe and possibly rest of exhaust system
oh and you will have to sort out the engine mounts, without causing a massive argument im going with the solid drivers side engine mount and modified passenger side mount option
then once all that is done you can look into engine tuning, and sorting the engine loom, as far as im aware stick with the 1.0 litre loom and splice the 1.6 loom into it!
im in the process of collecting all the parts, i have 90% of what i need and ive spent in the region of between £500 and £700, which is very good, and once i have evrything i can fit it all myself as im a mechanic
hope this helps dude