Thanks xya, my plan is to shoot 4x5 polaroid/fuji with the CU-5 and move over to the Harman direct positive paper as instant materials become rarer. Hopefully the new55project will be a success and give us film to shoot for a while yet.

I already have a CU-5 camera so theoretically could make my own version of the 88-45 camera body, though at macro level accuracy of focus becomes essential. Not sure I'm capable of making anything with any degree of precision...