This is part one of a three-part installation series of the Pierce 5T dump kit on a Chevy chassis. This video shows the primary measurements installers must consider before getting started. Take time to double check all measurements to ensure proper installation. http://www.piercesales.com This installation video can be used when installing a 7.5T or 10T kit. The main difference between each kit is the lift angle, overhang and length of the bed. 5 - 7.5T kits are compatible with 8' - 12' beds while 10T kits are compatible with 10'-16' beds. Read your manual for further instructions.