I'd be wary of anything with the Boost Brother's name on it. I decided to pull the trigger on their headers a while back, they're absolute shit. I've got leaks and my installer, 1/4MileMustang, had to cut so much from my car and the headers themselves. I'm not really a fervent believer of "you get what you pay for," but this was one case where I would recommend dropping the extra coin and getting the On3 kit. More positive reviews, more positive rep. You may save a few bucks up front, but after the extra headaches of making pipes fit and whatnot, you may be in it for a lot more than you expected.