Wanna order exhaust for my truck. I know I want a turbo back exhaust. What's better about 5" than 4"?? I just DD the truck with light towing once in awhile and might try a sled pull sometime. Truck is stock except for a bully dog programmer. I know at some point i am going to ditch that for a PHP chip sometime. What exhaust should I get??
99t/aman
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