You know who you are. You have all the specs memorized, you know what all the options were and the subtle differences from year to year. I have some obscure questions that only you guys would know. Who are the go to guys on this board for 71 to 73 Rivs.
JZRIV knows his 71-73's pretty well. Centurion knows all 71 models. I am sure there are others as well. The BCA Riv forum has some knowledgeable dudes as well.
Instead of picking out specific people to ask you may be better off posting your questions for all, some people will know a lot, but maybe one person knows something that someone else doesn’t. How many times have we seen on the board where the experts weigh in and someone else comes in and corrects them