1988 F250 with a 460ci motor

10.25 sterling rearend

wheres the best place to get 4.10 gears and a posi

 

When I went to 4.10's I bought a complete rear end from a wrecked truck for less than I could buy gears. 10.25 gears are quite a bit higher that gears for an 8.8. Also most of them came with trac-loc from the factory.