The gearbox mount was custom, but it resembled that of a 200ZR one from what i have heard. The engine mounts just bolted to the original mount point, the gear shifter just lined up perfectly, I cant get any pics atm cos im 2 hours from the car and the engine is out for a rebuild. Im using the 200ZR sump and the only problem i had was it was slightly to low and ocasionally bumped on the steering rack, so i spaced the engine about 3 mm higher and it fixed the problem, although there is a slight dent in the sump now (not a problem though)
I got mine engineered and registered in Canberra even when i was in Vic, so i cant really help, but if you do logical things like upgrading brakes and wheels, then it shouldnt be a problem.