Just put the champion fuel rails on champion ported intake and there isnt enough room off the underside of the fuel regulator for a 6-AN fuel line to the return. What do you guys do? Im using the adapter for the stock style accufab adj. regulater and a 90* 6-AN lacks 3/4" of clearing. Just so u know ive got an 8-AN line going in. Can i use the factory fuel return line? Mods below. Running RA double pumper. THX