That's what I had originally intended but the more I got to thinking about it and the more I searched the web I found pinhole cameras that had the sliding film holders that would make it a bit more versatile. If I cut a hole in the bottom I could make a fitting for either a lens or a pin hole plate and shutter. The top would be the GG and the film holder. What I would like to know is, what would the film plane be or am I asking the wrong question? I told you that I can complicate air. I had found this one...
http://cgi.ebay.com/110mm-PINHOLE-5-...item27b3531c44