Has anyone tackled a gear swap in a Jag Salisbury differencial? Converting it to Dana 44 gears. I have read that there are kits available so that you can choose the many gear ratios available for Dana 44s. My series 3 XJ6 IRS has 2.82's in it. I would like to run 3.73's or something up to 4.10's. Anyone know of a source for kits?