How will it perform?

In this off-season I'd have the intake manifold 'fixed' and then it'll probably run near the 9's. This all depending on how well you can optimize the combo (tuning and execution). I think I've said it in other posts but I feel it would respond to more cam, a 4500 carb and a 904 LOL (WTH more stall too) I'd guess the current gear and small cam will work together well. More gear would likely run out of steam. Good luck but I'm betting you'll have it pretty close, pretty quickly.