Have been looking at some different Roller Rockers. What is the best setup for the money. Have seen many of them on E-Bay but don't know how any of these are holding up. I have also seen the stainless ones are they better than the aluminum. With my 509 purple shaft would I notice much difference if I went to the 1.6. Hope everyone doesn't get tired of my questions, Hard to find an all a-body mopar website. Any help is greatly appreciated. Thanks Rick