heads are bead blasted, ported, full radius valve job, decked, new oversize valves 1.90 intake and 1.630 exhaust black nitride kibble white valves, new andrews springs, set for up to .590 lift, (black heads can be painted wrinkle black for an extra charge) , silver are left natural, polishing fins like paint is extra, these are called stage 27 to match the ev 27 cams our most popular all around choice for a great power and long life, call with needs for special engine combos we can handle everything, these are on your cores we do not have cores at this time