I'd like to know what the other two will be. Any good model of a dining car will be appreciated in N scale, but there are very few that I need. Basically, what ran in the early Amtrak Empire Builder and North Coast Hiawatha.
I'd love to have a model of the SP&S Columbia. It ran occasionally in the Empire Builder, often enough that I have several pictures of it. Since he's doing SP&S cars, this would be a nice addition.
The usual EB dining cars were ex-GN, in various GN and BN schemes.
Ex-NP cars were less common, but more often seen than the Columbia. I suspect that they ended up on the North Coast Hiawatha, which went through Wenatchee rather than Pasco.
I already have Kato UP, CB&Q and ATSF prototype diners, any of which could have been seen. I personally saw UP 4803 and CB&Q's Silver Diner. I never saw an ATSF diner, but did see their coaches and sleepers a few times.