bikingshearer , thank you for the tip about the book! I'm going to read that for sure. I appreciate the thorough writeup about the history, too; I didn't know any of that. It's really fascinating.
SurferRosa , you are right, present tense. I think I was stuck in the time-traveler concept of going back to the 70s (and those are both gorgeous bikes!).
Chombi1 , thanks for the response. You've made me want to try riding one someday. Maybe that should be my next build...