If you have a 6, which i take it you do. The gt takeoff's are from the cat's back, no H-pipe, or anything. I welded mine up true duals. If you are just wanting to get takeoff's for the piping, it would probably come out cheaper to get a muffler shop to do all your pipework and just put the 50's on those.
"I'm not driving too fast...just flying too low"
-03 SB Cobra vert- 2552 of 5082 Born 02/25/03
90 7up vert - new project-07 DSG Focus -DD