I don't know .. I've got a Mustang Mach 1 that can spank a skyline ... Even though it only has 4 gears, it tops out (re: bangs the rev limiter, needs more gear) at ~216mph. So far, a friend of mine has built every car (no engine swaps yet) with all mods, and he can MAYBE pull me a car, and then I proceed to walk past him, and drag down the top end. I love that car.
I love my Skyline GT-R R34. It's great for racing the opponents, and doing a little drifting. The Ford GT is quick off the line, but it seems to lack a little in the top end. Same with the Supra. I'm waiting for the engine swaps, and I'm slapping a big motor into a really light car.