Here are a couple in progress photos of a 4x10 back adapted to a Zone VI 4x5 camera. I figure I am about a 1/4 of the way through. Unfortunately, I will not have rear focus ability as the rack on the Zone VI was custom made according to Richard Ritter. The bellows is a paper mock up built according to Barry Youngs book. I figure on about 360mm of draw. BTW, it is not a good idea to try to fold the bellows while watching the football game. The back will be a combination of Barry's and Dan Dozer's design.
Thanks to Barry, Dan and Richard for their information. Also thanks to my buddy Mark at the Chicago School of Woodworking for allowing me access to his shop. ( You think a Unisaw is the bee's knees? you should try a Felder table saw.)
With a little luck I should be making photos by Christmas.