Chrysler 8-1/4 vs 9-1/4 Backing Plates

[JedIEG]

I just bought a 9-1/4 sure-grip sans brakes for my 72 Satellite. Does anyone know if the 8-1/4 backing plate flange bolts are the same as the 9-1/4? (or the 7-1/4)? The '74 Chrysler service manual doesn't seem to indicate a difference in the flanges for any of the X-1/4 axles. It would be great to just swap the brakes off of the 8-1/4

 

[moparmarks]

8.25, 8.75 and 9.25 use the same brakes.

 

[JedIEG]

Good news. Thanks