This is the two series posi for the bolt in retained axles found in the BOP 10 bolt 8.5 rearend , it fits the 2:41 or 2:56 ratio ring and pinion , it has been disassembled 0 inspected and cleaned , clutches are good servisable condition , lubed and reassambled , should work fine with the daily street driver , Asking $225 plus shipping from zip 60034 plus buyer pays shipping