AED Performance HO series carburetors are built in house with parts made here in the U.S.A. If you are looking for a professionally prepared performance carburetor at an affordable price... we've got your carb. Each carb is fully machined & hand built using our exclusive wet flow bench technology for a balanced fuel curve then test run to ensure only the highest quality and performance. Designed for Pro-Street, Drag Race, and Pulling. These carburetors offer crisp throttle response, great drivability and killer acceleration right out of the box.