− Decrease quantity for QTP 14-18 Chevy Silverado 1500 4.8L/5.3L EC/CC SB 304SS Screamer Cat-Back Rear Exit w/4.5in Blk Tips Quantity + Increase quantity for QTP 14-18 Chevy Silverado 1500 4.8L/5.3L EC/CC SB 304SS Screamer Cat-Back Rear Exit w/4.5in Blk Tips Out of stock