I just bought a new gas tank for my 65 chevy. the old one was all rusted and had holes in it. I want my new tank to last for years as i plan to keep this car for a long time. I was wondering what the benefits of powder coating are, does it protect against rust? Also i was wondering if the new gas tank can withstand the heat when the powder is being baked on. I only want to coat the outside of the tank. I also looked into por 15. Which one is better to preserve my tank and fight rust? Price is not a concern, i only want to do the job correctly. Thanks.