Can you swap a awd 3000gt to rwd 3000gt?
There were no rear wheel drive 3000gt's made. If you mean swap AWD into the chasis of a front wheel drive model, yes, it can be done. The frames are the same for both, however it is extremely expensive to swap everything, you would be better off buying a VR-4.
The 1994 3000GT came either as AWD or FWD for the North American market, everywhere else the only drivetrain configuration offered was AWD. Fwd models did not get turbocharged engines, and for the model year 1994 all trim levels of the FWD model had a 220/222hp dohc v6. AWD models all got the 3.0L twin turbo engine, except for the Asian market which in addition got an N/A awd model with an optional automatic transmission.