''Has anyone successfully upgraded a 47-50 drag link to the later style without the ball studs?''

yes
see:
http://www.stovebolt.com/bboard/cgi-bin//ultimatebb.cgi?ubb=get_topic;f=22;t=003275;p=1#000000


Jim & Caroline
The highway is for gamblers, better use your good sense."
Gooday-that's my 1¢ answer due to the lousy economy ~ cause I ain't got - no . mo . doe

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