Yep, as posted above I installed a Magnaflow 5" turbo back that was made for the 07 5.9L trucks. It sounds really good and has no drone at all.
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HardcoreDiesel
2009 5500 C&C Laramie QC 6.7L 4X4 G-56 4:44's and ALL THE**B.S. DELETED @ ONLY 18 MILES** H&S XRT@175H.P., 5" Turbo Back Magnaflow Exhaust, Banks Intercooler & Tubes, AFE Stage II CAI, 3 Dipricol Guages, Accuride 19.5's & Valair 3800# SFI Billet/Bronze Insert DD Ceramic/Solid Hub/12 Button