Not that I am aware of, short of a Koni with failed back or transport I've once seen on eBay which had obviously been hacksawed to hot-glue a Graflex back to it - a crude job and probably not fully functional.
Koni lenses have sometimes been taken out of the Koni barrel and attached to small LF camera (Baby Graphics, Technika 69) lens boards or even to Mamiya Press barrels, where they indeed cover 6x9 - probably not with full performance into the edges, but who cares?
Sevo