Scott: If you are going to change gear ratios, consider the 10.3 gears that are in the Club Car Villager LSV. You can contact David Hicks 706-836-7210 at Revolution Golf Cars for information on part numbers and availability on the gear set.
I knew that I would have to do a complete rebuild to change gears and bearings, so I chose to spend a few extra bucks and purchase a complete 'brand new' 10.3:1 transaxle thru David that never had fluid installed. See my Avatar info as well. I didn't give up as much torque as I would have with 8:1 gears which is all you will find in the aftermarket along with the 6:1.
Good luck