Saw your response to ad for some 6X-4 heads and wondered if you would be interested in a set of 6X-8's (date code D-07-6) which I bought from a fellow board member here several months ago which he described in his ad as:

.......milled .040 bringing them to 93cc, 3 angle valve job, 7/16" ARP screw in studs, Lunati 73949 valve springs, Comp 10 degree retainers/ locks. Heads were gasket matched to a standard Fel Pro intake gasket, re-shaped and smoothed around the push rod buldge and the Intake valve unshrouded in the combustion chamber all per Jim Hands methods.

At the .040 milling, these heads do not need to have intake manifold machined to fit. They would provided something around 9.2 compression on a 455. I bought the heads for a 455 engine build but decided to go another route.

These heads are ready to go except for rockers and pushrods. $350 plus shipping from Abingdon VA area.