Magnapack help!
#1
#5
You can just put a curve down dump on it, leaving it open would sound a little better, or going with the shortest dump possible. Adding a cheapo chromed tip will help it echo outside better.
#7
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#8
Just about. Just be sure the outlet is past the cab or its an inspection fail. The purpose of the turndowns is to guide it behind the cab and angle the fumes down. They cut down the decibels a little while doing this though.
#11
#12