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

[Maxxamongus]

For those that can recall, there are two other E-Maxx, Maxxamoungus-upgrades, I was working on from the stock 3905s. I called them #1 (color-blue influenced) and #2 (silver-color influenced) E-Maxxs. Here's what they use to look like before I desired to convert to brushless monster trucks. This is what they looked like during the upgrades!





Here is the #1 E-MAXX upgraded presently: