gearbox / clutch (if it doesnt come with one) / clutch cable / flywheel / flexplate / loom / ecu / memcal (possibly BCM on VS.. - no idea).
pedalbox, pedal - shifter/interior stuff (shifter boot / surround / console)
other possible requirements - different tailshaft, manual starter motor.
there are plenty of places around that do the conversion for cash - asking those who have done it before, is always a good starting point, and those that do it for a living are an even better resource.