Were they stored at the car Builder's or did the government send them to yards for storage. So any of those Westerfield/Tichy/Im Tichy RTR cars lettered G.E.T. should be stored on a siding and not running in revenue service. I realize westerfield doesn't offer this scheme but some could paint one up.
The G.E.T. cars were so stenciled to show ownership until the USRA could persuade some railroad to accept (and pay for) them. They were stored until a buyer was found, then re-stenciled with the reporting marks and numbers of the buyer, so they never operated in revenue service as G.E.T. cars.