I am currently working on a 70s peugeot road bike frame conversion to a fixie. to show how dumb i am i didnt even take that into consideration when i originally ordered a bb. yeah learned that lesson fast. My question is what bb will fit french threads and the sugino messenger crank i got for it.

the bb needs to be 68x103 and have french threads and fit the i believe JIS square taper.
i was hoping for a cartilage bb but im open to any ideas, and preferable as cheap as possible.