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Way too many variables in that question. Mild head/cam set-ups are 400rwhp; wild head/cam set-ups are 500rwhp. You need to establish the parameters of what you want from your car first.
I've seen everything from LS6 cam and heads to big a$$ trex cammed, 3speed auto daily driven cars. It all depends on what you want out of it and what you're willing to put up with.