basically, if you were going to leave the engine standard and rego.
1) Fabricate engine mounts.
2) fit steering rack that will fit still encorporating power steer or run a manual rack. Rack ends to suit.
3) Transmission Crossmember
4) Tailshaft
5) Exhaust including modified extractors.
6) R33 clutch master cylinder bored one size oversize.
7) Radiator hoses (could use standard radiator) Thermo Fan
8) Throttle cable
9) Speed sensor compatibillity?
10) Misc plumbing e.g heater, booster, intake, air, steer. etc
11) Wiring
12) Modify fuel system (no return line) Reg intank.
these are the main points i can think of off the top of my head.
all conversions are similar, this one did not require things like crossmember, sump or trans tunnel mods which was good. and its a tidy fit, easy to change plugs and remove gearbox.