Having installed a 4" system on a '97, I'm familiar with making extra space for the downpipe(bending/cutting the seam or bending the firewall) Any special "space making" work or other concerns with the SuperDuty and the 4" exhaust?
Also, any comments on vendors with well-fitting or not-so-well fitting systems?
i have the summit kit no problems with install put it on it 2 hours it comes with clamps i welled it just to be safe d/p went in with no problems sounds good to not loud but deep
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