This is sage advice coming from a guy who probably suspects I have nothing into them! :-/ which is the case! . Actually hard to say exactly what I have into them, it was part of a ‘parts lot’ buy. You know how that goes, that I know :-)
I seriously want to sell these to a friend for fair market value probably minus 20 or 30 bucks but I sure am getting hammered on this site. I’m pretty sure they are 1969 vintage. At least the ones on the blue swinger I had were just like it and when I had to bolt the motor and trans into the car at 9:30 at night for the guy to load it onto his trailer it all fit like a glove.
