Help needed identifying right part

A quick learner from USA says:
Folks,
Here's picture of the rear mount track support that I need. The track is
1 1/8" at the bump close to the end of the track. It is barely inside
the holder.
I've looked at 32-028, 32-003, and others but don't know which would
work. The track was installed about 40 years ago. Your help will be
appreciated.
Thumbnail of the uploaded file named PXL_20230125_192427682 (1).jpg
Thumbnail of the uploaded file named PXL_20230125_192427682 (2).jpg
Profile picture of Jasmine
Jasmine from SWISCO responded:

I believe part 32-003 may be the closest replacement match.

Carefully review and compare the measurements to determine if it might be a fit.

Detail of 32-003
Detail of 32-003

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