My setup is below. Im thrilled with the power I made with the heads I have. They're just some old school Edelbrock Performers 1.90/1.60 valves, but I want more now. Im currently building a new 331, this time with a new Boss 302 block. There is nothing wrong with the block I have, but I know its just a beefed up stock block and if I want to make more power I better not push it any farther. So I guess basically my question is how much more power would I make If I swapped out my current heads for a set of Afr 185s with 2.02/1.60. If I can make an additional 25+ to the tires I may go for it, just wanna hear what some of you think