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Gm 07-08 Silverado/Sierra Gmt900 1500 5.3L Ec Std Bed 6 Ft. 7 In./Cc Short Bed 5 Ft. 9 In.|Sport-Single Side Exit W/ Twin Pro-Series 4.0 In. Tips. Exhaust System W/ Reflective Sound Cancellation (Rsc) & Tips|(Excludes 2006 Extended Cab Models With 5 8