I contacted a engine builder by email the other day about increasing the hp in my 350. He wrote back to me mentioning turbo's, blowers. I don't want that stuff. I want it to be carb powered. Why do they mention that type of set up when I see on the net, crate engines with 500+hp using carbs and not turbo's or blowers? Is it a cost issue or what? I want to reply to him, but would like to hear from the members first.