A nicely done set of heads with the right size chamber to produce a respectable compression ratio are important, as is the right camshaft! I'm not much on the altitude stuff, every time we go to Bandimere to race it's a good weeked if we make the quarter finals!!!

You might want to talk to Barry at Survival Motorsports, he's the FE guru and will definitely help you come up with a combination that will give you the best return on your investment!!!