Please, who can help to find one of HO-scale

BLI/PCM SP Southern Pacific Morning Daylight parlor-observation cars PCM-685 or PCM-695; car #2954 or #2955, skirted only.

These models are out of stock on most (all) great online dealers, unfortunately.
I would like to complete a 5-car Sacramento Daylight train in addition to my SP class A-6 and this one car is missing yet.
Thank you very much for your help. Each response will be answered.