NOTE: Edited on 1-11-2015 to help late comers by including specific info that I recently included way down below. Thanks all for the great inputs.
NOTE: New info on Classic Trains article added down below on 1-17-2015
Here's some video of the new Sunset UP Train of Tomorrow Cars pulled by an earlier released Sunset UP E7A 998 with a QSI Q3 Titan Magnum ET decoder. Turns out the cab number of the real thing was 988.
The info below is based on what I have found in the big, thick book, "The Union Pacific Streamliners" by Harold E Ranks and William W. Kratville. Fifth printing, 1992. pp 378 - 389 on the Train of Tomorrow. I quote them because I am anything but an expert on UP passenger trains.
Based on this info and on Scott Mann's inputs I believe the 4 car Sunset 3rd Rail UP set I have accurately portrays the initial order of the cars and the direction each was facing and the major features match the pictures and the spec's. It's a beautiful set. I'll leave it to others to count rivets.
(Note: My UP E7A engine in the video, Cab 998, came from a previous Sunset E7 project. So, I did not order the T of T E7A engine with the correct UP 988 cab nr. Just the 4 cars.)
The correct order of the train set; engine and four cars, in the initial GM blue livery and later --in the early days of the UP ownership -- in the yellow/gray livery -- is:
Power Unit EMD 765 in GM livery becoming E7A Engine 988 in UP yellow/gray livery
Star Dust dome coach (dome seats facing the rear)
Sky View dome diner (4 person tables in the dome)
Dream Cloud dome sleeper (dome seats facing the head end)
Moon Glow dome observation (dome seats facing the head end)
Name plates are at the head end of each car.
This is the order in which they are shown in the video (names blurry, sorry.)
This was the initial train set. Very soon after entering revenue service the train was expanded and changed in many ways So, one can find lots of different configurations on down the timeline.
As a backdrop, I was using Sunset UP 844 pulling a Presidential Train with the Precision Scale Ferdinand Magellan car on the rear and decided why not just run it briefly too. This engine also has a QSI Q3 Titan decoder. The rest of the consist: Sunset Aux Water Tender. Atlas O express reefer. Earlier Sunset brass passenger cars.
Any jerkiness in operation is not to be blamed on the combo of QSI decoder and Sunset engines. It was me trying to control a new camcorder while also using two separate NCE wireless throttles. Clearly exceeded my level of competence! These engines run stone smooth at low speeds and all speeds for that matter when I'm paying attention. And I wish you could all hear the sounds in person instead of on small pc/phone/whatever media speakers.
https://www.youtube.com/watch?v=VgYrw6rNvJc