if you want to be cheaper about it, just buy the damn sugino bottom bracket spindle and use whatever japanese cups and bearings that you have. i run sugino 75s on my gitane, which is french threaded and just use sugino french threaded cups and quality loose bearings. my price ended up not being too much lower than the actual 75 bottom bracket cost, but that's because the french cups are rare and expensive. almost any garbage-ass bottom bracket on a bike from the 80s japanese bike boom will have suitable cups. buy the 30$ spindle from aebike or realize that the shimano (or whatever) JIS bottom bracket that you buy will work alright, but is not ideal, and shut the **** up.