I think you'd do quite well with about 4.30's or 4.56's and about 4000-4500 worth of convertor and the MP 509 juice cam, given the rest of what you have. The 4.88's might be too much gear for the rest of the package. On the flip side, you could put a hemi grind stick in it, and about 3500 convertor and then you wouldn't make as much mph as the bigger cam, but it would still leave hard and maybe leave you some revs to spare at the stripe.