Looking at a 72 barracuda

These cars didnt come with the 7.25 axle right? So it should have either the 8.25 or the 8.75, yes?

A friend of mine bought a 1972 Challenger in 1974. 318 with a 904 automatic trans. I'm pretty sure it had a 7 1/4" rear in it, because I remember him being jealous of me when I put an 8 3/4" in my car.