Originally posted by saggleman
word on the street is stock block sr's are more than capable of 550+ hp with the right tuning *choughscottcoughcough*
Ah, but if you want more, there is no replacement for displacement. Well, except that the stock rb25 supposedly only takes about 600 to the wheels. But if you built it, I would have to guess that it would make more hp at a more usable rpm than an equally built sr, even with 700+ hp sr's in Japan.