I have a fresh pair of Stude part # 1358786, headlight lens cover gasket (rubber). These are for all square headlight Avanti and Avanti II. $15 for the pair, INCLUDING shipping in the U.S.
Also have a fresh power steering cylinder (ram) rebuild kit, part # 1553403 available, 1963-85 Avanti. $15, INCLUDING shipping in the U.S.
Finally, I have a new Stant radiator cap in the correct 14 PSI rating for 1963 and up Avanti and Avanti II. This is the cap that has a lever on top to safely relieve the radiator pressure before removing the cap. $14, INCLUDING shipping in the U.S. Thanks. John