* Add 2 Part 62821b Dark Bluish Gray Technic, Gear Differential with Inner Tabs and Closed Center, 28 Bevel Teeth (Alternate) (match ID 8)
* Change 2 Part Dark Bluish Gray 62821a Technic, Gear Differential with Inner Tabs and Open Center, 28 Bevel Teeth {match ID 0 to 8}
Comments from Submitter:
Found alternate in MISB set. Thx