I currently have the 15K RBW Lil' Rocker with the rails in the bed; I see they have a slider that appears to use the same rail setup. Does anyone know if you can just buy another hitch or conversion, while still using the original rails? I really don't want new holes in the bed or frame. The reason I need to change is the fact I plan on having the bed modified which will make it effectively a short bed. Any help would be appreciated.