Edelbrock shorty header system is a direct Replacements that Deliver Seat-of-the-Pants Performance Over Stock Exhaust Manifolds. These Edelbrock shorty headers have outstanding performance features such as mandrel-bent tubes and laser-cut or stamped flanges. They are direct replacements for stock manifolds, so installation is simple using the factory crossover pipe. Headers for throttle body injected engines are made of 17-gauge stainless steel to withstand the high-heat environment, other Edelbrock headers are made of durable 16-gauge mild steel. Two finishes available: Ti-Tech and Ceramic Coating. 50-state street legal. Made in the USA by Edelbrock for the ultimate in quality and performance Direct replacements for stock exhaust manifolds... simple installation using stock crossover pipe Shorty Headers are available in 2 finishes: Ti-Tech and Ceramic Coating Laser-cut or stamped flanges ensure a leak-free seal with no alterations Heavy-duty flanges for a superior fit Made of either heavy-duty 16-gauge mild steel or 17-gauge 409 stainless steel