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The Industrial Injection 6.7L Cummins Premium Stock Plus Builder Box was designed for the mechanic inside all of us. Save thousands in labor and assembly by having a complete unassembled machined and blue printed short block shipped to your door for you to assemble yourself. This kit will come with everything you need to assemble a short block. These kits include premium upgraded parts resulting in industry leading reliability out of the engine build. We use the highest quality parts and machining processes in every engine build, guaranteeing you the up most reliability and precision to have the longest running engine on the road.