IMFU-
The X2 is definitely a good looking aircraft. And you have every right to take pride in your contributions to the project.
However, I had mixed feelings the first time I saw some hardware I designed being displayed in a museum. I spent a few years working on the Space Shuttle program, and a few years ago one of the retired Space Shuttles was put on display at the Air & Space museum in Los Angeles, so I went to see it. The first thing that struck me was how old I must be if something I designed was now part of a museum display!