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My brother in law has an 03 Supercrew 5.4 4x4 bone stock. He wants to put a new exhaust on his truck and I would like to get him a Magnaflow muffler for him. This will be belated christmas present.
He doesn't want true duals so I'm thinking a nice relatively mild SI/DO Magnaflow would suit him perfect. He drives an hour each way to work on the turnpike so interior volume must be kept to a minimum. That said, seeing his truck has all 4 stock cats intact, I'm debating between the 14 or 18" Magnaflow. Anyone help me out here? Thanks in advance!
Are you going to put tailpipes on it? Without tails it's going to echo under the truck and will be probably be loud whichever muffler you use. With tails you can probably use the 14 without any trouble.
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