there is diesel dynamics, also, diesel specialists will rape you. also, bulldog performance on american pacific as well. they were high too!
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2004.5 3500 SRW SBOX AUTO 4x4...JET BLACK ,SLT LARAMIE, BullyDog Powerpup. Genos Muffler Elimination kit w/5" tip, Silencer ring MIA, 20's wrapped with nitto grapplers, Factory matched trans/pyro/boost guages.