Crossmember Back Crossflow System w H Pipe Exhaust System 67 74 studfix Year Make Model Submodel 1999 2005 93356 FBHB Year Make Model Submodel 1999 2005 Chevrolet Silverado 1500 Base 1999 2006 Chevrolet Silverado 1500 LS 1999 2006 Chevrolet Silverado 1500 LT 1999 2006 GMC Sierra 1500 SL 1999 2006 GMC Sierra 1500 SLE 1999 2006 GMC Sierra 1500 SLT 2001 GMC Sierra 1500 C3 2002 2006 Chevrolet Silverado 1500 WT 2002 2005 GMC Sierra 1500 Base 2002 2006 GMC Sierra 1500 Denali 2002 GMC Sierra 1500 HT 2002 2006 GMC Sierra 1500 WT 2003 2006 Chevrolet Silverado 1500 SS 2004 2006 Chevrolet Silverado 1500 Hybrid 2004 2005 Chevrolet Silverado 1500 Z71 Off Road 2005 2006 GMC Sierra 1500 Hybrid 2007 Chevrolet Silverado 1500 Classic LS 2007 Chevrolet Silverado 1500 Classic LT 2007 Chevrolet Silverado 1500 Classic SS 2007 Chevrolet Silverado 1500 Classic WT 2007 GMC Sierra 1500 Classic Denali 2007 GMC Sierra 1500 Classic SL 2007 GMC Sierra 1500 Classic SLE 2007 GMC Sierra 1500 Classic SLT 2007 GMC Sierra 1500 Classic WT 6 V8 2017 2018 Ford F 150 Platinum 213 3 Lifetime Limited Warranty This is the first system on the market with a true 'straight thru' flow path