Thanks for all the info, that's a lot bigger bump stick than what I was looking at. I will be changing the springs to match the cam but I am still running the original Indy rockers, retainers etc. that came on my heads, am I going to go beyond what these parts will regularly handle? I don't have much of a budget so I need to make sure my parts will last a few seasons. Other than the Hughes cam mentioned does anyone have a shelf part # for a good cam I need to purchase the cam lifters and springs soon.