My 6 3/4 is a "Lincoln Locker" and probably not the best for cornering.
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OK, I'll bite...what is a Lincoln Locker?

My first 6 3/4 was locked (in despiration) with DevCon "iron", packed into the bowl of the carrier. Axles were put in place and the "stuff" was allowed to set. Used it for a driver's school at Summit, and races after it. Never found any iron in the diff oil after that.

Eventually, I found out how to lock it with welded spiders that were placed into the diff during assembly.

Welded diffs in a rear drive car (I can only speak about solid axles) require an adjustment in technique, but very driveable.

I've only seen one LSD, which I sold to a Saab guy that eventually used the internals to fit into his own carrier. I believe the axle spline counts were the same.

Good hunting.

Bill