I pulled the trigger and ordered a pair from RockAuto yesterday and they arrived today just before noon. WOW! I'll let you guys know, hopefully later this evening, if/how they fit the '67 convert.
The drums fit fine but there is a difference between them and the old ones. I believe the old drums are original but I'm not certain. The new drums have a flange that sits inside the dust shield while the old drums have a groove that the lip of the dust shield sits in.