Keep in mind the Rock Track is NOT CHEAP. Use T/case command 650-1100. I got mine for 650.00 but I think they made a mistake. They are in huge demand. Then you need a 140.00 shift kit, then a 200.00 speedo kit(if you get the wrong one) then 650.00 in new drive shafts, I forgot what the adapter was...Yes you get lower gearing, but it is really more expensive as I found out.