The late Terry Metcalfe modeled a PFE reefer train. I thought that was kind
of neat...a goal. Then along came X4005 with its 36 SP box cars of every
imaginable class. Sorta hard to duplicate since many...if
identified...probably aren't available. Like I say...I'm a serious model
RRer but I don't take it seriously. I'll do about 12 of the SP box cars.
Actually for your era, chances are good that almost
all of the SP classes can be modeled.