Need help with choice of 1/8 scale diff for E-maxx

[KMN]

These are a great choice, and great price as well.

Kyosho ST-RR Hardened Differential:
http://www.ebay.com/itm/Kyosho-ST-RR...EAAOSwnipWU5zi

Here's the hardened pinions that go along with these specific diffs:
http://www.ebay.com/itm/Kyosho-1-8-I...EAAOSwZVhWRFzB

Using Mike's custom Revo shaft coupler from the store here, you can get them in 8mm bore and use Revo shafts as center driveshafts relatively easy.