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Old 07-04-2012, 10:14 AM
HEMI450HP HEMI450HP is offline
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Join Date: Mar 2012
Location: Conroe, TX
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Vehicle: 2010 Dodge Ram 2500
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Engine: 2007-2011 409ci (6.7L) Cummins Turbo Diesel 350hp 650lb/ft
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If you decide to go with the ARH longtubes, they offer their own 3" y-pipe with or without cats. That will clamp straight onto your existing exhaust piping and then to your replacement muffler.

If yo go with shorty headers, they bolt up to your factory restrictive y-pipe. You dont have to upgrade the y-pipe to a better flowing Magnaflow, but I would highy recommend it.
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