I'm building a 496 for one of my other projects, and have been looking for a pair of suitable heads for it. I have been looking on-line, and keep coming across these aluminum Pro Comp heads that a bunch of people on ebay are selling. Does anybody here have any experience with these heads? The price is right, $1175 a pair assembled. The specs are decent, too. 320cfm intake ports, 2.25/1.88 valves, good springs, pressure castings. I really want the AFR 320, but the price tag of $2250 is harder to come by than the $1175for the Pro Comps. You get what you pay for, but are the Pro Comps decent?