10 X 1-3/4” rear brake backing plates wanted

Wouldn't backing plate be the same for big and small bolt pattern since it is held on by bearing retainer?
Wouldn't backing plate be the same for big and small bolt pattern since it is held on by bearing retainer?
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Wouldn't backing plate be the same for big and small bolt pattern since it is held on by bearing retainer?
Most typically 1.75” rear backing plates found on a-bodies, which would typically be SBP. Also found rarely on B-bodies (BBP of course). Same PN for the plat3, at least in 1968. As an aside, the BBP 1.75” drums were very hard to find. Impossible now I suppose. SBP easy to get at Rock Auto still. Redrill these for 4.5” PC.

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