you do realize that hooker headers makes a set of headers and comp cams makea a cam with 268 dur.!!!!! now i say you go with clifford's 272 cam and their adjustable rocker and 3x1 offy intake system now you've got a nice little hot rod I-6, i'm gonna do something radical with and old 300 I-6 in the back yard, it's gonna get a dual 4-barrel intake and the other turbo in my room, reworked head with adjustable rockers, and an aftermarket cam.......hehehehehehehe