I would definately say if you can send it back and get a refund Mainstream can hook you up with a really nice piece that will fit perfectly. I don't know how much you paid for that but I'm sure that Mainstream would be similar in price or less depending on what you want. Keep in mind that most systems benefit from a longer test pipe as it helps in scavenging from the collector. Hytech will tell you to run an 18-24" test pipe with their headers as that is where they will make the most power. It may be best to modify the exhaust a bit to fit the test pipe, in which case, I would definately reccomend Mainstream for excellent quality and price.