i read an article about a man with a warehouse full of brand new japan parts. he assembles brand new CB750's for sale. zero mile bikes! i think he charges a left nut tho.
here is the article:
http://www.motorcyclistonline.com/features/122_0401_cb750/
me and i a friend bought one for $500. the frame is still under his stairway. maybe the motor too.