Paint us a picture buddy what year/engine code is the 20vt and not sure but thought all the n/a ones were arz (please correct me if I'm wrong) but I think the simplest one would be the agu because it's a simple engine
The parts I'd think you need are
Ecu, key, ignition barrel and transponder, engine loom, downpipe/whole exhaust, intercooler, gearbox and driveshafts. + a few more I'm sure I have missed
On another note where are you based