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Old 02-28-2020
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Dave Dave is offline
Join Date: Feb 2006
Location: Penn
Posts: 12,094

I am not familiar with "hard parts."

There are a few different "styles" of locking / limited slip rear differentials.

Ford "Traction Lok" is a clutch style diff and fairly common.

Torsen-style have gear packs that handle the power transfer to the axles.

You also have ratchet and spool-type diffs that positively lock the axles together.
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