I just finished relocating the couplers on all of my UP passenger cars. The last one was the Observation from the Challenger set. Turns out this car did come with supports to secure the rear body to the frame unlike the Excursion Observation. Also it was devoid of extra tape below the widows so it came apart easily. As this set came out about year after the Excursion cars it looks like changes were made at the factory to do a better job.
No idea if Lionel will make these available to owners of cars where these are missing.
Clearly visible in the rear window.
Pete
