What Differential Do You Have in Your 1965 Barracuda?

toolmanmike said

741 and 742 came first. 741 cases were used in the A bodies and 742 in the B bodies.

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However, there was another at least one interchangeable 8.75" that predated both of those, I believe my Dad's 59 Chrysler wagon had one, and it was common, so did my 62 Dart.
Oddly I see no 2.76 offerings.