BBK 15950 1-5/8" Shorty Tuned Length Performance Exhaust Headers for Chevy Impala SS LT1 - Polished Silver Ceramic Finish BBK is your Number One Aftermarket Performance Exhaust Brand in the USA - American Designed and Built BBK Exhaust is Built with CNC Mandrel Bent Tubing for 35% Increased Flow Over Stock to Increase Horespower, Torque and Performance Aircraft Quality Construction, Heavy Gauge 1-5/8" Tubing, 3/8" Laser Cut Flanges, Large Bore Patented Designed Collectors and Custom Precision Hand and Robotic Welds for Long Lasting Quality Direct "Perfect" Fit Replacement Exhaust includes All New Gaskets and Hardware and Offers Improved Performance and Sound Over Restrictive Stock Systems Bolt on 10-15 HP with these BBK Shorty Unequal Length Exhaust Headers Fit all 1993-1996 Chevrolet Impala Lt1 Ss Applications - Custom Nickel Chrome Finish