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.