I have 2 sets of Rockwell 2.5 ton toploaders for sale, one front/one rear per set. 6.72 gears. One set is the u-joint type front (850.00 set) and one is the older style (750.00 set). If you are going to upgrade your shafts with some stronger aftermarket stuff (like OEM) then the older style will work the same, the only difference is the shafts. I am located in Blaine, MN. E-mail mn-scottw@bakerbearing.com or cell (763)234-0942. Scott