What about a mechanical clutch LSD in the front, like a Detroit TruTrrac?
I would think that in snow, wouldn't it handle fine around corners b/c you don't have the sudden unloading etc like with an auto-locker?
only key would be to learn not to hit the brakes while IN the corner so that it locks down?

With 200+ Billion electrical parts, the world most complicated machine is inside your own skull.

Question Reality.
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'89 Rnr DLX "SR4.5", 32s w/ 5.29 locked f/r blah blah