[mothman]

Originally Posted by suicideneil

Thread bump; look what I found:

http://www.ebay.co.uk/itm/1605969637...84.m1423.l2649 8 spider plastic diff cup

http://www.ebay.co.uk/itm/HoBao-Hype...item3f0e15b074 8 spider gear set

http://www.ebay.com/itm/HoBao-Hyper-...item336c044a03 6 screw crown/ring gear

http://www.ebay.com/itm/HoBao-Hyper-...item3f0e14bd75 pinion gear

Fill yer boots....

You might want to check the size of the hyper 9 diffs. IIRC, the size of the diff is smaller than the most 1/8th diff. Might not fit in your ultralight.