yeah...we've got the APS...i want heads to role so bad at that place....it's a good header...when it's not cracking with the weather change....I mean, I payed to play but WTF...how you gonna make a faulty product and charge an arm and a leg for it....they knew their products were faulty cause they sent out a "replacement header." Anyways that's my little rant. I need to know WHY y'all like a certain header for mainly performance, not so much sound. Lemme know...thx!