OK, the good news is my 66 Fastback is at the painters. Whoo Hoo! Now I need to restore all the bits that make up the interior. I've already got paint matched to the factory blue. I've done the dash, A pillars and the inner doors before it left for the paint shop. The rest consists of three materials I need to prep and refinish. Steel, fiberglass and plastic. The steel I've got down, but what about the other two? What are the best methods out there to prep these parts for paint?