I am interested in opinions on the best header; 4-1 design, lower price range, for a supercharged fit. I want power gains to be lower in the rpm range rather than higher, so I'm thinking longest possible primaries? Since the engine will be boosted and the header will be emptying into 57mm downpipe then into a 60mm cat-back, I'm thinking larger primaries? I like the DC but I wish it was in stainless and are the primaries too small diameter? J's racing is nice but way too much for a shorty. I like the Megan racing but are the primaries way too short?, looks like they could have made them at least another inch longer. Most of the other ones that I seen have sh*ty collectors, like the T1r. Thank you for any input and suggestions.