With a large enough budget, you can get just about anything in there. You will need more than just an engine to make everything work like the engine control module from the donor vehicle with a wiring harness installed in...
Unfortunately, I have looked into this as well and it is not possible. You can import the older R32 (https://www.yourmechanic.com/article/how-to-ship-a-car-from-japan-by-jason-unrau) and put a RB26 engine in it. Due to some people doing some shady stuff with registering R34 chassis, the...