I am trying to find information about Santa Fe's "10-Pack" (or 6 or 5-Pack) Fuel Foiler articulated TOFC cars. Specifically, I want to model them in their later years, as from what I recall they went through many iterations. I "think" that I saw a set around 1995 that had been reconfigured to a 5 unit set and the big yellow Fuel Foiler decals were absent and only ATSF reporting marks identified them. They were of course dirty and grungy so it could have been another type of car for all I know. Anyway, I was just wondering what became of them and how long they were in service. (or still?) I have a four-car Con-Cor N-scale set that I want to "modernize" a bit so I would appreciate any photo links or information you would have. Thanks!