All BBK fuel rail kits are designed and built in house from lightweight billet aluminum that is CNC machined for unequaled fit and finish for popular late model Ford Mustang, LS1 powered GM or Hemi 5.7L or 6.1L powered Dodge or Chrysler. These fuel rails have been developed to work on stock or modified turbo, supercharged or nitrous applications where additional fuel is required to prevent lean out conditions and engine damage. Full size ports at each end for optimal injector fuel supply and a full 1/2 in. inside diameter bore for maximum fuel delivery. Every kit is a direct fit for your application and includes all mounting hardware, connectors, hoses and fuel lines required to supply an ample fuel to your engine.