Is it delivery from import (first time australian registration) or delivery from interstate (transfer of rego from another state)
If its first time Aus rego your in for some fun Nothing you mentioned will pass and you must take the car back to factory specific. If this is the case i can help you out with the stock orange indicators and stock R33 exhaust, someone should have some stock r33 wheels with decent tread. Leech helped me out with the stock wheels when i had to go through this (Dickson are bastards... took me 3 attempts because of little things but he has sold his skyline and may have sold the wheels already
If its interstate rego you will need smaller rims as stock R33 wheels are 16" and the difference is too large (12mm max?) Best bet is to change exhaust anyway, not worth the stuffing around with going back and forth and organising time off to go there.
Goodluck with it though, im fine to lend you the indicators (are you talking about the side blinkers?) and exhaust if necessary