These are not run-of-the-mill generic chokes. They are calibrated to specific carb tag numbers. If you are lucky enough to still have the original tag, you can match the numbers and get the correct choke for your car. If no tag is present, then match up the years, engine size and style of carburetor to get the correct choke. Either way, you'll have a choke that will help your car start more easily, run better, and it might even get better gas mileage!
