Once you have decided on the lens you want to use on that camera, you can have the lensboard machined to fit the shutter mounting flange.
SK Grimes is considered the 'gold standard' for that type of work.
*HINT: Buy a lens/shutter that comes with a mounting flange or retaining ring.*
Otherwise, you'll need to buy one or have one custom made.
SK Grimes is considered the 'gold standard' for that type of work, too.
DIY lens boards work, too...it all depends on your DIY abilities, wallet or aesthetic.