Nice job. I like the tastefully hidden plumbing.
When I built my recent LUT models last year, I had a lot of trusses leftover from the kits. And a shuttle. So I decided to make a representation of the SSME test vehicle, MPTA-098. The stand is a simple representation of the test stand. It isn't exact, but it was a fun little build.
2nd model is Apollo 11 landing from the series "For All Mankind" It also uses a Dragon Models LM and a plaster base.