Just like what these guys have been saying, its up to you how you want it to run. I would definitely go with a custom cam, from what I've heard from some people, you can't go wrong with them. You tell them what you're looking to do with it and they grind one out for you. They cost a bit more, but well worth it. Trickflow makes some nice pieces, their TW and FAC heads are good. You should go to corral.net, and read about what some guys are running over there and what combos they have. They know quite a bit.