Move all the parts to a former limestone or underground coal mine in retirement Kentucky, or if you prefer, a cave.
The “Karst Geology” area around Bowling Green/Mammoth Cave National Park is riddled with underground space.

https://www.onlyinyourstate.com/kentucky/underground-places-ky/

Remember what happened at the Corvette museum?

Even if you do not seek out a cave, the cave may come to you.