[Greg Reimer 7376]

That looks like a 416 casting, a 305 head, 1.720 intake,1.500 exhaust. Usually, the guides are shot, the valve stems are worn out, and the seats are pretty deep because of the use of unleaded fuels. To properly rebuild a set of heads, magnaflux,clean,replace guides and seats, ream for new valves, install new valves,springs, seals and hardware. That alone runs a customer around $500-650 depending on how bad everything is. That's just a basic head rebuild.Anything Stock Eliminator is WAY more. Good luck with your enterprise.