We custom designed our Wilson Manifolds Ultra High Volume Fuel Rails with an 11/16" ID to feed the highest horsepower applications imagineable. This large ID allows for optimized cylinder to cylinder fuel distribution for more power and reliability, particularly on highly modified engine combinations. Our fuel rails are made of a high quality extruded aircraft quality aluminum and can be machined for any application on your intake or one supplied by us. We also stock CNC machined versions ready to bolt on for specific applications including LS1/6/X, LS2/7, and late model Mustangs. Un-machined fuel rails are also available for customer installation. We also stock all of the necessary fittings and lines for any installation.