So I am stationed on Guam with Navy. I have a 99 Silverado that started running terrible so it ended up being a bad cat. I cut both off, due to the fact that Guam has no emissions testing or noise regulations. The advice I need is on what kind of exhaust I could run now. I am open to any opinions. Thanks

 

Are you planing on bringing it back stateside? If so get some high flow cats. What all has been done to the truck?