I have a set of 4:10 OEM Ford gears that were out of my 2000 F-350 4X4. The gears have 50,000 miles on them and are in great shape. They fit a front Dana 50 axle and a rear Ford 10.25 axle. I am asking $400.00 for both sets. The set for both axles runs $900.00 new from Ford. I will take pictures and send them if someone is interested.