I have a Dana from Cass with the tru trac and LOVE it! For what you would pay for a gear pot a all new Dana is not much more? I had a 8 3/4 with 3:55 sure grip. I sold it and that made up the difference in cost , now every thing is all new axels bearings etc.... and a bullet proof Dana . Only regret is I wish I had chosen 3:73 instead of 3:55