1964 Valiant "Get Runnin & Drivin"

Killer6 said

Older 7.25's are a different animal, since the intro, they have been made in A-body LBP('73&up w/discs), F-M-J-body LBP, and Dakota rear LBP & Early Dak 4×4 Front diff's.
Very early units even had different pinion splines & ring gear screws. There were changes to carriers, bearings, axles/retention, so yes, RRR's early-A diff is not the same as an '80's Dak....which is probably the only reason any new 7.25" parts exist at this point.

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Lets call it what it is, not an early A rear axle.
Rusty has an A body small bolt rear axle. This axle was the same axle in A bodys from 1963-1972. All these axles have the same 9 bolt cover. So there is no such thing as an early 7.25. Its the same A body rear end from 63-72.

1973-1976 7.25" rear axle had the big bolt pattern, and came on A body's with disc brakes.

1973-1976 A body's also had an 8.25 rear axle. It was used for high performance models, replacing the 8 3/4.

I never said anything about a Dakota. Choose your parts wisely.