There are three in KS, five in MO, one in OK, two in IA, and two in NE. AFAIK only three of those thirteen are roadworthy.
Closest to you I think is Kevin Golden #502 in Harrisonville. He's a busy guy but probably would show you if you can find a time.
I'm always happy to show off my project. You should definitely make plans to visit the national Rally in Kearney NW in Sept.