Dw, I can hardly get into the back of a Skyline with the seats all the way back. I had to sit in the middle of Niszilla's R34, with my legs behind the passenger cos when he put the seat forward a bit, AND had my head on an angle. I hate being tall sometimes.
Put an R34 GT-R front end and rear on the S14, then throw an RB in there, and you'll have something unique! (Yes, that has been done without the RB engine)