What can I do to lower my compression other than changing my heads. I did not plan on running more than 10.5 to1 cr.. My other cam choice was a comp cam 292 or 305., are any of those cams similar to your lunati. My car will also be a weekend only driver, but I want to be able to drive it to the track and back on 93 or 94 octane, and the track is 2 hours away.