Cut the excess body from the pathfinder body that contains the bellows and front standards, bellows and a half inch of the rear of a Pathfinder 110. Then 3D print a back to stretch out to the 6X14 needed for the rear frame. The frame is wide enough to incorporate 120 film width. One just needs to move a back far enough from the original Pathfinder film plane to accomodate the 14 cm film length. Longer panos could work here.
That way, you have a focusable bellows for varied focal lengths. Every Pathfinder I have come across has had a perfect light tight bellows, a knob on the door for focus, and the camera is foldable. I cut the pathfinder body down to a half inch or so around the door, so just have to create a printable back and affix it to what's left of the Pathfinder. Could do roll film back, like the one shown on this printed body. However the sliding bellows front plane draws me more and the use of varied lens lengths adds flexibility.
I saw someone make an interchangeable lens mount using SLR pieces before about 5 years ago. This was just one of the many FrankenCamera mods I've seen on the Pathfinder body.
Naturally printing the whole camera seems good, but I like this Pathfinder exercise and may proceed. Will post pix of the "cut" pathfinder later today.
I have four of these pathfinder bodies. Could even go fixed lens with varied focal lengths. ????????