what is the greatest achievements you did on your car.

Besides finding and buying another A body (thank you @Princess Valiant) probably the biggest and best thing I've done to it so far is replace the rear floor pans. Not that I haven't done it before, I haven't done it before I got old and broke down with a lot of health issues. But I took my time, got my trusty knee pads out and went to work. If you want to see it, check out my build thread for Vixen rat cheer:

1964 Valiant "Get Runnin & Drivin"