Full Race is now selling a conversion to turn your Nissan 240SX S14 into an all wheel drive, Skyline GT-R powered monster. Take the RB26DETT and the entire AWD drivetrain from the GT-R, put it into a leightweight S14 chassis and what do you get? Something amazing.
One of the major drawbacks to the SKyline GT-R is its weight. The GT-R is a heffer. I can't even imagine having an all wheel drive, RB26 powered 240sx, but I want one. Check out Full Race's website for more pics, specs, and pricing. If I only had that kind of money, I would be hunting for a 240SX as we speak.
The closest thing most of us can come to driving a Skyline GT-R:
http://www.full-race.com/r14/