I am still looking and researching that. I want to keep the (GM G-body) triangulated four-link, so I've been looking at all the housings made for it. My favorite bolt-in right now is the Moser M9. Inside it (current thinking): WaveTrac, 35 spline axles, 3:1 ratio.


The (numerically) lower ratio with a series-wound DC motor creates a bigger load for the motor to overcome, and allows it to draw more current, which creates more torque - until something finally cries "uncle" and gives. These motors can handle 2000-3000 amps of current.