show me some flow #'s

Ramcharger,
They are stainless steel valves.
I've been porting heads since the mid 70's. I use serdi cutters that I had special made by serdi so there really aren't any angles as it's a large radius, then I use another serdi cutter to remove some of the radius in the bowl area. The seats are very narrow race only type. As for the valves being modified it really depends on what the head is going on and where the flow has to be had, as I build each head for the camshaft used. It would be crazy to build a all out race head and then only use a .450 lift cam and the flow wouldn't be at it's best where the cam works, so you don't need peak flow at .600 lift when you only go to .450. what modifications that work for a low lift cam most likely wont work for a high lift cam as there's too may trade off's.
As for doing only mopars I would starve, as there's more ford and chevy guys around here, not to mention the ricers and motorcycles.