My two cents worth...I'd look for a nice used gas tank. Also, verify the color really is off on those door panels. Although the whites were notorious for fading and decaying, they were never really white to begin with. If you do need to paint them, I think Just Dashes sells the correct color. I've also heard of people wiping the plastic with one stroke of a turpentine dampened cloth to remove the dead layer of plastic with some luck, but definitely practice first or try it in an unseen area.