FAST now offers bolt - on XFI 2.0 Kits to install fully sequential EFI on Small and Big Block Chevy and Small Block Ford engines from mild street rods to 1,000 HP all - out race cars. XFI 2.0 Fuel Injection Kits include carefully matched components, including the XFI 2.0, Dual - Sync Distributor, a single plane aluminum intake manifold, 4 barrel throttle body, proper size Precision - Flow Fuel Injectors, aluminum fuel rails, fuel pump kit, all necessary sensors and professional quality wiring harnesses with labeled connectors.