my one buddy has dual 5in stacks off a semi on his cummins

mine just clears the top of the cab. i run one outa respect. when i am wheeling, they guys following me dont wana smell diesel all day long. so i got a single 4 inch. dont have it far above the cab so it isnt catching branches.
Attachment 43972

i do miss my old stacks though....
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i have mine for 3 reasons
1.keeps water out of my engine when im boggin
2.looks
3.so i dont blow soot all over whatever i tow(towed a girls car that i used to date its was a custom green paint once i took from where it broke down at to her house it was 2-tone green on the drivers side & soot black on passengers side biggest mistake i made:ouch:)