A longblock is a very popular choice for those looking to replace their bottom end. Valve cover to valve cover, flywheel to oil pump and everything in between. All units are tested and tuned on a live engine stand and checked for quality and functionality before being sent to you. What you need to complete this is swap your intake, exhaust, sheet metal, etc and you are ready to drive. All motors by MOFOCO come standard with a 12 month warranty.