596 head performance mods

But the price of cheap valves doesn't mean that they will flow or work better in a Mopar head. Also what works in a GM head is and was designed for that head. I've been this route and most every time the head had turbulence when the GM style valves were used. Isn't the object to get rid of turbulence and smoothen out the air flow?
I have found ways to get rid of turbulence without port work, and I agree that the GM valves are cheaper but most of them are 2 or 3 piece valves. And to get a good 1 piece valve reguardless where you get it it's going to cost more. So now the price of valves are similar, most 1 piece valves run $16 - $18 each. This is the cost of MP valves from the dealer.
IMO I would stay with what works and works very well and not try to get fancy with parts, unless you've been doing performance work for awhile and understand the effects of what a part change does to performance.