ATK has introduced a new line of EFI engines based around FITECH'S NEW Self Learning EFI systems. This engine comes complete from Throttle body down to the oil pan. The only thing you will need is to supply your own fuel system (In Line, In Tank, or the FITECH Fuel Command Center). These engines are dyno tested with your EFI system and ready to go! Take advantage of the latest EFI for better drive ability, trouble free cold start, no tuning required regardless of elevation, driving habits and part swap!