[Steeveedee]

As for the throttle plates, the cast iron base plates wear like...iron. If it is currently running, you can spray that throttle shaft (both sides) and see if the idle speed changes. If it does, you're a candidate for bushings. I don't think I've ever had bushings put in an iron base plate, only the aluminum and pot metal ones like Q-Jets and Edelbrocks. For the rest, if you take it apart and it isn't corroded into next week, it'll probably be OK to rebuild.