I forgot to mention that timing chain,cam,lifters if original to the motor has to be getting very tired or worn. Rebuilt heads on a old cam and liftets doesn't sound like a good idea. As nice as that car looks protect your investment. Or just keep it nice like your parents had it when new. But you have to decide what you want to have done. We just give advice and compliments. Don't get upset and sell it to Gus68 he'll just mess it up. Lol jk