7.25 Brake Backing Plate Interchange

I know that the ten inch brakes appeared on 7.25 rears in 1965. The 7.25 has never gone out of production as far as I know. I'm thinking of the Dakota and some Jeeps. Did they retain the 4 bolt mount?
What vehicles can provide a 10 inch backing plate with the 4 bolt mount usable on my early 7.25?
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I think you are confusing 7-1/4 and 8-1/4. It was variations of the 8-1/4 that are/were used in
Jeeps and Daks. A 7-1/4 just wouldn't make sense in a truck or a Jeep.

When I converted my 1964 7-1/4 to 10" brakes a couple years ago, i just sourced the CORRECT backing pkates on FABO. Why make things more difficult?