Tranfercase swap question. I am rebuilding my FJ40 75 (12/74) 4 speed, but I have some issues with the 4 speed transfer case. I have a 3 speed transfer case that is rebuilt and ready to go I got in trade. The input bearing is 29 tooth with 10 spline in the transfer and mine has a 29 tooth 16 spline on my old set. If they are both 29 spline can I just swap the gear and get the correct bearing a seal or will I need the kits I see sold for the swap?