Can't help you much with specific answers to you questions but here's a link to the Plate Camera Jason B has on his site
http://www.burtmanindustries.com/zoo...=rev_cam_plate
This may or not be what your looking for but if it's on Jason's site that means he has done some research on the subject or it wouldn't be there. Send him an email and I'm sure he will be able to guide you in the direction you want to go. He usually can get just about anything you want. Looks like they are closed until 3/28/06 but if you can wait and nobody chimes in here it's an option.
Hope it works out for you.
BTW, Welcome as a new member