TTR 21
Human Spear
The Industrial Injection 5.9L and 6.7L Cummins Builder Boxes are 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. We offer these kits in 3 available options. Stock, Street and Race.
