you need erst t3 and manifold also the down pipe, then you need a t3 oil feed hose as for the drain you will need to prise yours out of the block and pop in a stub from an erst or have one made its 16mm by the way appart from the bottom charge hose from the t3 turbo its happy days do it the t2 is shit.
a thing to consider also is having the correct chip flashed as the fueling is way off from the t2 i had one done and it now pulls fine wereas before i found it slower even with the bigger turbo