Pinion Snubber 7 1/4 to 8 3/4 swap

I was looking in my 1967 parts book and it only lists one pinion snubber support (17-19-20) for Dart, Valiant and Barracuda (1st column) , but a few rubber bumpers (17-19-3) for same.

This seems to suggest that the snubber support is the same on 7 1/4 and 8 3/4

There is a specific rubber bumper for 8 3/4 vs 7 1/4

Can anyone confirm that the metal snubber support is the same 7 1/4 and 8 3/4?

Thanks