I would get a Hellcat block and fill it with aftermarket rotating assembly, custom ground cam and Thitek heads. By the time you buy or pay the core on a set of cnc 6.4 heads you're close to what the Thitek's cost and stock heads are crap alloy. Sure you can use stock parts and make some good power but for how long?

Last edited by fbs63; 03/10/17 02:15 PM.