Proflow's carburetted or EFI Twin Throttle Body Versions are fabricated intake manifolds and are budget-friendly, fabricated sheet metal style intake manifolds. Each manifold is precision-fixtured and welded for a perfect fit and structural integrity. They are available for carburetted Chevy LS, Ford Coyote, small block Chevy, and small block Ford engines. Fuel rails not included, use PFEM62220