There was the one guy on here who had a 2.8 KB 2v. I think he made around 700whp. I know it was up there. Or if you have the money I would do a big bore 2v, 9.5:1 compression (maybe 10:1 if you use meth), tork tech manifold with a Whipple or KB. That should get you in your 650-700whp range...