I have a few years on ya but this is not my first go around. My 64 cuda is not running, I am in the process of stripping the body, I installed a 4 wheel disc power brake kit to make her stop.. it also changed the wheels to 15" fims and a 5 x 41/2 bolt pattern so the 14" disc brakes fit. you should look into frame rails for you car
if you do any racing..it will stiffen the chassie and keep the body from flexing,you can damage it pretty easy if you are running a v-8 like me. Summit racing 150 bucks!