I recently came into some old parts from my family's auto parts store. Included in those parts are carburetors. I have 6 Holley carbs and other makes also. However, I am having difficulty trying to figure out which carbs go to which type of car. Any help in being able to identify what goes to what would be appreciated. Just an additional note, these carbs have already been rebuilt, at least once, MOST of which are still "shrink wrapped" in plastic for protection from dirt. These carbs were rebuilt in the mid to late 70's and early 80's. Yes, they are old. And, are they still suitable for use? Thanks again for any help that anyone can provide.