Originally posted by eclipse982nrRST
What makes that manifold a 'race manifold' ?

We call it the 420A Race Manifold because of its design. Our manifold was specifically designed for very high performance applications. It's the only one of its kind that doesn't cost an arm and a leg, but still offers uncompromised performance and durability. For instance, the runners feature a cross-sectional area more than 8.5 square centimeters larger than the stock manifold and it's made of highly durable stainless steel.