Hi Paul,Actually you may have premium shoes on your '57. My experience has been that the "lifetime" shoes and pads are lined with a very hard composition that is hard to wear out, but does not have a good friction coefficient to stop the car. So what I would recommend is to stick with a brand name of shoes, like Wagner or Raybestos, etc. but go with their middle grade. Don't get the cheapest and definitely don't get their lifetime stuff. I've used semi-metallic pads on a couple of cars, they wear the drums or rotors a little more, but not anything serious. No noise problem. They work great on a panic stop, and usually get better when warmed up. May take a little more pedal pressure.
Good luck, Nick