1973 Plymouth Duster repair and rebuild

Demonic said

It depends on the Duster brakes at the front. Disc cars are 4.5" bolt circle, and drum on all 4 cars are small bolt to 76.

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I should have elaborated as the context of the question was regarding geometry. I am pulling off a small bolt pattern rear on this 1973. I am not concerned about the bolt pattern size as the intent is to goto large bolt pattern ford 8.8. What I was trying to ask, the housing sizes, perch locations, and pinion degree as compared to the perches.

I guess the correct question would have been, could a 1969 barracuda 7.25 rear end bolt on a 1973 small bolt pattern duster? If so, would it work fine, would the drive line geometry correct?