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The problem with any kind of posi or limited slip is winter.
The instant on you get with a Detroit locker and some of these other geared units will spin you around. The clutched units engage a little gentler but give you the same result.
I say go with something that can be externally turned on/off and more importantly locked out for winter/ice time operation. Something like the elocker that Toyota uses or the relatively new ARB air locker. Leave it off and it functions as normal one wheel squeal OEM open diff. Engage the locker and it becomes a spool. Since it stays off most of the time to start with and fully locks and unlocks, not slipping between on and off cycles, it cant really wear out.
Putting a diff that acts like an open diff on road and then becomes a spool when you need it that would greatly reduce the amount of damage vehicles do when they go off onto soft ground.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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