Back when I was working in large scale they really hadn't settled in to a standard for 3' NG equipment. I opted for 1:24 since there were a few players at that time. Unfortunately 1:24 didn't really catch on and so there isn't much of it out there. I ended up with some of the Delton stuff and a couple of kits such as the flat. I did a lot of scratch building back then.
Ryan never got into cars other than this one flatcar kit. The big thing for Ryan was their trucks. I have quite a few of their arch bars. Their plastic wheel set didn't last very long but the metal ones were nice. I forget whether the flat came with decals or if I bought them separately. They aren't dry transfer though.
Dave