How about some pics of High Performance haulers.

[Chlsnk]

If you are talking about double hump heads they flow pretty decent if you get some that are 2.02 valve. But don't waste your money on getting them port and polished and rebuilt if they are just wore out. For the price of getting them ported you could buy a better flowing aftermarket head . The Sportsmen brand stock replacement head they sell is even better than a set of cleaned up double humps. Or mabey invest in some even better vortec heads.