The drum brakes, even in fine working condition, leave a lot to be desired. It’s not so much how you drive as those around you. I put Wilwood disc brakes on my ‘68. They work great. That said, big brakes meant a wheel & tire change. Before you know it, I’m changing everything on the car. I love the end result but it’s not for everyone. Barnbird offers some sage advice. Do your research and understand what modifications you wish to do. Stops scope creep. IMO there are three things that really changed my car’s personality. Modern tires, good brakes and a fat front sway bar. All the other modifications added to the package but bang for the buck are those three.