You need to look Here.
Be advised, that while a 75mm lens will work on MY 4x5 (Chamonix) and I'll bet a 65 would as well, it may not work on yours. You need to take into consideration that the 6x17 backs move the film plane back, what 40mm? Which means while you may get coverage, you may not be able to focus. My 47 SA doesn't quite cover, but it gets 6X15 well, would work for me, but even with recessed boards, you can't get the lens close enough to the film plane for focus.