let me put it this way there is an rb25det power skyline in australia from a guy who owns a skyline shop there that is 800hp to the wheels with a top speed of 210 miles per hour, accomplish in a 2 miles distance while beating a toyota supra in a race.. If you don't belive me check the links of the skylinedownunder websites is in one of their links with pictures and dino charts...if you can show me an sr that can accomplish that than we I will say that I spend my money on the wrong motor untill then, I think there is a reason why the skyline is the premier car for racing in japan...