I have what was a 525sc ......454 with the 177 blower on it. After the bottom was updated to a 540 and the engine made roughly 625hp. I am looking to do some head work and get more from this setup. What do you recommend for maximum static CR and pulley sizes, I am pretty sure they are stock. The engines will spin to roughly 5500-5800. Also any cam input would be greatly appreciated. I dont have the head room to add chillers so thats out I have to work with what I have. Id like to see 750 reliable HP on pump fuel. This is a marine application.