Well I could not decide on an exhaust so I went the cheap route and cut out my factory muffler and welded in a piece of 4 inch exhaust pipe to fit its place. Since the 4 inch was bigger than the 3.5 factory I did not have to make any bends but just angled the pipe and welded it in its place. It now has a nice whistle at idle and at acceleration. After pulling off the muffler I cut it in half and found out that it was very restrictive with the chambers the exhaust has to flow through, I should gain some mpg now. Exhaust sounds the same inside the cab, but has the nice whistle on the outside.
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