OK, I know this is a lot of stuff to ask but here goes... I have the classic intake cam (to be installed next weekend). Is there a budget exhaust cam I can get and drop into an otherwise internally stock, american- spec sr20de. I've read that you can get away with even more agressive tuning on the exhaust cam, Yes/No? One more thing; When I buy the JWT Ecu can I request (will I need?) specific tuning for the differing cam profiles?