Thanks for the info They are actually 1-3/4" JBA headers and they have two versions which are good. one with a silver coating and one with a titanium coating. I used to own a ford truck that i put jba headers on.
Silver 1 3/4 Inch Tube Size Long Tube For Off Highway Racing Use Only. This Product Is Not Emissions Legal 2005-2006 Ford GT 1-3/4" Long Tube Header - Silver JBA JBALGTUB Performance Headers JBA Performance/Exhaust Systems/Headers Exhaust Systems Headers Y
Agree with Ron. I had OEM manifolds, cat delete, and xpipe. It was fun for awhile, but if your intend to really drive your car it will get old. If you just do periodic short trips it may be tolerable. Either way, it reversible. Enjoy.
i've had the JBAs on my blue GT for about 10 years. I really like them sounds great and they have performed well,, Im not sure if they are still being offered but they were much cheaper than any of the other set ups available at that time.. if you cant find the borla's you might get you the JBA's.