I wanted to check out the wear and tear on my original differential from the Aero that has 37k miles on it now that it is out.... so I popped the back cover and here is what it looks like....




Here is a close up of the spider gears...



And here are both ends of the side gear pin....





I rotated the gears around and could find no signs of damage or chips anywhere on the spider gears or the ring gear... can get at the pinion gear without disassembly... but it should look just a nice as the rest of them do.... pretty good for 37k and some track time... granted it is only about 45 runs....