1965, I already jumped on the undercoating to keep the bottom side good. I am going to use Lizard skin sound deadener, and heat control on the inside to help with the sound. I will pull the tank, and my headliner, and coat it every where I can from the firewall to past the gas tank and over to the sun visors. That will set me back about $400, so I am saving for that. One little piece at a time.