What Differential Do You Have in Your 1965 Barracuda?

Kern Dog said

You could get the 8 3/4 in later models if you had the HD towing option group. It also came with a bigger radiator, fan shroud and in some cases, front disc brakes.

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I was only speaking to the early A bodies, as he asked about a 65. Although you speak the truth. In 67 the 8 3/4” was standard with the 383 in a Barracuda, in 68 it was standard with all 340 and big block cars, and remained standard throughout the next few years until 1973 when it was replaced by the 8 1/4”.