Professional Products high flow billet aluminum fuel rail kits are available as complete kits with fuel lines fittings and adjustable regulators for direct installation or just fuel rails, mounting brackets and screws etc. Aluminum spacer bushings are also supplied for use on certain manifolds requiring extra clearance. These Large bore Professional Products aluminum fuel rails (.594" Inner Diameter) allow ample supply of fuel for engines up to 1,000 horsepower and look great !