Now I have more than a few of these cars in various paint schemes on the active roster and they receive their fair share of run time. With an eye on keeping the costs down I checked on hand supplies which revealed that the only decent railroad spray paint color I had on hand was a can of Krylon Walnut brown which is a very close match to the Athearn Pennsylvania Railroad brown. A check of in stock decals showed a Microscale Pennsylvania RR diesels decal set. So the PRR won out and the project cars were ready for stripping, cleaning, repainting and decals.
The GN car was also in pretty rough shape on the inside. The metal weight, coupler box covers and wheel axles were extremely rusty. To remove the rust the weight was wire brushed, sanded and then spray painted black to protect against future rust. The coupler boxes were sanded with a fine emery board and painted flat black. Unfortunately I forgot to photograph the green and yellow car prior to stripping the paint. This car had been glued closed so after soaking in 91% alcohol I was able to open it up. The weight and everything else received the same treatment as the GN car.
Upgrades to the cars included Kadee #27 couplers (medium under set shank) and Intermountain 36" metal wheels with their faces painted burnt umber. After paint and decals the cars received a coat of Krylon clear satin. They are now in revenue service.