OldDog: Seems like sound advice. I considered the valve guides, but wasn't sure enough
oil could seep through. Even just replacing the heads I would have a lot of questions. I like the AFR 185's, and consider the 1.7 rockers (thinking of Crane roller rockers). That and a Edelbrock performer rpm airgap with my Holley 670 Street Avenger.
The 165's have shorter intake runners than my World Windsor Jr.'s (180), so for a performance gain the 185's seem the way to go. Any way to verify the valve clearance before I buy the AFR 185's?
DD