For customers that don't have a power tailgate lift we have the portable aluminum steps. You just drill two five sixteenths holes on the inside of your tailgate, and the pins fit right in. We make sizes from twenty-one inches to 40 inches tall. This happens to be a PS-29 and basically my truck, if you measure from the ground to the height of the tailgate, is twenty-seven inches, so the PS-29 will work fine on that. For smaller trucks, the PS-21. For half-ton pick-ups the PS-29. For most three-quarter ton pick-ups, the PS-34. For small delivery vans, the PS-41. And for large delivery vans, the PS-44. For full sized vans the PVS-34.