Daily drive lunch box locker

[rustyrodknocker]

I need to replace the spider gears in my 8.5 but I was looking at maybe doing a locker instead. Specifically the Spartan lunch box style. This is for a daily driver. I don't go offroading. I go out in the woods in some mud and snow but I stay on a developed road unless of course I slide off. I do to a motorcycle trailer and car trailers sometimes and travel several hundred miles from home out in the high desert. So dependability is a must. As is driveability.

What experience do you guys have with this type of unit?

I could also go the posi carrier route also. Little more work little more money but
Better driveability. But I have also heard trucks are hard on them and wear out the clutches.

This is a stock k1500