I\'m looking for a set of spare axle shafts for a wide track dana 30 for my CJ7. Does anyone know the lengths of stock inner shafts? Also was wondering if anyone can tell me how to tell the difference between diff carriers for each axle. I have 2.73 gears now and want to go to 4.10. The carrier changes at 3.54 or so for both or so I hear. Any help would be great thanks.