you need the engine, gearbox, loom, UCH to start with
you can use the 1.4 driveshafts, and you can get away with the 1.4 brakes but id be using the 2.0 16v ones if possible
best bet though is to do it properly and use 2.0 brakes, hubs and suspension
if it was me id be buying a doner car and that means u have everthing you need