WP 50' SS Automobile car modelling questions


I'm building a trio of these cars in the WP#12001-50 series from the
MDC #2150 kits as per Page Porter's article in the July 1995 Mainline
Modeller and following on John Ryczkowski's prototype article in the
March 1995 MM.

My questions:

What brake wheels did the WP cars have? It appears to be an Equipco in
Page's article but there is no mention of it.

Is there another better source for the Symington trucks with the
Barber lateral motion device than the MDC trucks? John mentions that
the MDC trucks are ok but they seem crude. Do the MDC trucks represent
symington cast friction bearing trucks?

Did any other railroads have clones?

Any help would be appreciated
Stefan Lerché
Duncan BC Canada

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