Hoping to get opinions from some that have done it ... I'm up to the part where I want to get parts ready to setup the top of the motor in my '98 Camaro SS(LS6 intake, heads, cam, etc.) and I am trying to decide between getting a set of good used heads and getting them machined then building them with my choice of parts, or just ordering a set of performance heads ... Which is better with cost vs. performance as a factor ... ??

Also, if you buy the heads ... any recommendations ??