I've heard some of my dads fromer marine buddys bringing back JDM mk4's and a few soarers and even an R-33, most of them actually cheated a bit and got VINS of parts cars and used those vins to get registered, others paid an aimporter to bring it in and make it pass emission, new lights exhaust stuff and all, really depends on how you wanna do it, I'd personally use a vin of a parts supra, as long as the car hasn't been reported salvaged or junked your good, but whatever car it comes off ya can't let the other car be registered so make sure its a car that ain't gonna be running. It's all choices, these are ways I heard from them so may or may not be accurate but thats all I got for ya, thats what they told me and i guess it worked for them