Stanley/Monarch slider track needed, 7 ft. 10-1/2 in. long (7'10.5")

A home owner from South San Francisco, California says:
Due to imminent house sale, we are trying to replace as quickly as possible a Stanley/Monarch slider track (at least 11 years old). Tag on back of door has these two numbers: 64564-001 and 10415982.

The track is 7 ft. 10-1/2 in. long; per attached pictures, it is 3-5/8" wide totally, but note per picture that one open portion of the track is 1-1/4" wide, and the other open portion is 1-1/2" wide.

If not possible to replace quickly, any suggestions on removing rust and restoring white color would be appreciated (Anything other than painting it?? Wouldn't paint just come off quickly from the doors sliding against the track??)
User submitted photos of mirror closet door hardware.
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Tom from SWISCO responded:
Take a look at our 23-243. This is the closest match we have to your track. The only issues are the length, which can be cut down with a hack saw, and the total width. Now, only the distance between the two rails has to be the same for the door to function, but the difference in the total overall width might be a cosmetic issue. See what you think.
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