on an N/A 6.2 how big is to big for exhaust i was thinkin at least 3 inch duals:grd: i have 2.5 on right now on the gas 350 but if less back pressure on an N/A is better would going that big hurt it? also i have a 3.5 cowl hood on the truck does anyone think that will help air flow or should i do morei was planning on running the tallest air cleaner possible because clearance is not a problem, what is the most power that can be achieved from an N/A diesel