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Old 05-10-2008, 08:29 AM   #15 (permalink)
carl48
Cummins Fanatic
 
Join Date: Jan 2008
Location: ruidoso new mexico
Posts: 171
you can buy a Donaldson m90535 muffler for $90 and the 5" turbo back piping from fbd for less than $300 this is cheaper than 4", quieter , and no restriction . spool up is a non issue
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06 3500 dually, 4X4 qc big horn g56, dynatrac free spin, fitch fuel catalyst, bd exhaust brake, donaldson m90535 muffler, no cat, cfm+,winspeed heater spacer, smarty jr, taylor wings, 9750 luberfiner bypass filter, psm cold air, cool hose, tag, air tab's, pdr cam
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