Loose Screws still has some cup and cone bb parts. Here is a 124 mm spindle for any English cup set:
http://www.loosescrews.com/index.cgi...id=60230757966
Also, a generic English threaded cup set:
http://www.loosescrews.com/index.cgi...id=60230757966
I also have a set of SR English threaded cups in my parts box which are used but in excellent condition. Yours for the asking if you want them but you will have to source the spindle elsewhere.