[christianchevell]

With the costs I would stay stock, if you really look at comparisons on stock vs CNC the factory CNC is not always beaten by paying more to others even on a big bore stroker nutso build. You have to figure in the cost of head gaskets, new torque to yield bolts, etc.... and setting up the correct preload again and springs .... which just because they are ported does not mean they will give you good springs for your cam or want a core....

I went the cheap way some day If richer I will go Small bore ls7 via Mast....