MGT 3.0 Conversion

[What's_nitro?]

So- I bought one from TH, 'cause they are on sale for a VERY good price. I have zero knowledge about these trucks, so I have a few questions.

1) I hear the diffs are only 2-spider setups- How will they hold up, and/or are there ways to make them stronger? Can other diffs fit, or will 2 more spiders fit in the existing diff cup?

2) How durable is the transmission? Would it behoove me to swap in an E-Maxx tranny to more easily fascilitate the dual-motor setup I have in mind?

3) Aside from the drivetrain, what can I expect to break first?