I would agree the afr heads are the about the best on the market if you want big time performance. But you can get a package for the Vortec heads from Scoggin Dickey for under 800 dollers that includes the an Edelbrock intake, rocker arms, assembeled heads and gaskets with arp bolts. On my stock bottom end the package made close to 400 hp on the dyno. But if you just looking for the best heads go with the afrs.