Has anyone considered or put roller rockers on your Z06. I found this to be an effective HP gain on other cars. It decreases friction and you can also get higher ratio rockers to increase valve lift. Anyone have experience or information on them. I feel on an 01' this could compensate for the slightly larger cam on the 02'. It is a fairly easy mod I am considering, but I don't want to do it blindly, any info would help.