Steve. Idid a very similar thing with a 47SA and a 65 angulon to mount them onto some bodged up old Ensign 6x9 cameras. I used a couple of Olympus 50mm 1.8 lenses. Had to reverse the helical inner part and make a new inner sliding 'keyway' arrangement, but on the whole it was pretty easy and works well.
Good luck!
Richard
www.richard-littlewood.com