I saw this a while back on the then Military Channel now AHC. Since I was a kid I have been interested in WWII stuff that led to one of my hobbies of building scale models. I love doing the research for the builds. Seeing the story about Gustav and Dora started a 8 to 10 year search for such a kit to build. Finally found one for a reasonable price.
Link to Soar Art 1/35 scale Kit
https://www.scalemates.com/kits/soar...ay-gun--115182