Improve horsepower and torque thanks to a set of JBA Cat4ward shorty headers for your supercharged 1999-2004 SVT Lightning! Restrictive factory cast iron manifolds aren't as efficient once you up the boost on your supercharged 5.4 engine. Swapping to a tubular manifold lets the engine breathe better. JBA headers are a direct replacement for factory manifolds and are 50-state smog legal. Utilizing a mandrel-bent 409 stainless steel primary tube, this construction allows superior durability and improves flow. To enable cylinder head porting, a 3/8" thick machined flange with larger exhaust ports is employed to resist warping, leaks, and distortion. The silver ceramic coating applied to these headers helps to keep the stainless steel protected from corrosion and discoloration, while lowering underhood temperatures. JBA's patented Firecone collector technology is race-proven for optimal hp/tq improvements. These short tube headers are made to connect directly to your factory mid-pipe and retain your factory catalytic converters. Each system comes with high-quality hardware, manifold gaskets, factory-style emission connections, and step-by-step instructions for a professional leak-free installation. JBA shorty headers are one of the best performance improvements for your 2nd generation Lightning sport truck!