So I wanted to re gear my rear end I have a light duty f250 7lug with 3.73 open diff gearing I wanted to get a posi trac and 4.56 or 4.10 gear ratio but I can't seem to find a kit or anything to order, and next off I need to get a tow hitch like for a ball or shackle but I have a body lift and I'm not sure if there is any tow hitchs made that go up three inches? Also I'm thinking about trading my coil spacer out for a taller coil would that help out a little with my suspension roughness? Just some questions I've been wondering