I have been wondering, and kind of debating about it. I am on a tight budget here, and my 01 firebird see's some strip time as well as my daily driver. The heads, should i just get the heads worked put new valves,springs, etc. or should i just buy the stage 2.5 6.0 liter heads? The cam that's going with it is a MS4. Just need some opinions on this. Thanks