FAST? has taken the next step in making EFI (electronic fuel injection) easier with these FAST? Complete Fuel System Kits. These kits cover all street performance applications and most bracket and super class drag racing categories. The fuel system kit is the perfect product for those switching from carburetion to EFI, building new EFI engines or simply upgrading their current fuel system. The FAST? Complete Fuel System Kits are component-matched systems. With one part number, the FAST? kits include everything you need to supply your state-of-the-art high performance, EFI-equipped engine.