I have an 83 Cadillac. I'm assuming your plastic air lines should be about the same as mine. It's just a small plastic air line and you should be able to buy it by the foot at a local auto parts store, not an Autozone or big chain store like that, but an auto value, car quest, or napa. Cut a small piece off so that you can take it with you to the auto parts store and buy how ever many feet you need to repair the burned section. You will also need a couple of compression fitting unions that the same store should be able to supply you with too.