| I would do a exhaust atleast 4". Straight pipe if you dont mind the little extra noise. Then find a tuner or chip that meets you needs. There alot of good ones out there you just have to know what you want to do with the truck.
Tyler
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07.5 Chevy RCLB Summit White. PPE, 5" MBRP,Cobalt gauges, Banks Intake, Fire & ICE |