Ok i'll make a start and list what I can think of:
T5 5 speed box (make sure its a V6 box as it has a longer input shaft than V8), V6 bellhousing, manual pedal box, V6 clutch fork, V6 clutch cable, pressure and clutch plate, thrust race, 8 bolt flywheel, oilite spigot bush, manual pcm or a manual tune burnt to you memcal, manual engine harness (or modify existing auto harness), T5 shifter and knob, manual plastic console insert, manual tailshaft and front yoke, manual gearbox crossmember.
There's probably a few bits i've forgotten but that's a start for you anyway