I like the idea of the heads, I don't like the idea of having to replace everything I already have. Plus I also like using the aluminum, already adding extra weight using the Race block. Also with the Indy setup there is there a way to get the crossover hose to work? Looks like the old style hose but I could be wrong. I have to look at the pictures again. I want to keep my heat. What size runners are the Indy's?