Chrysler 300 Gas Tanks Chrysler 300 Gas Tanks Year Description Quanta # 1967 - 71 Gas Tank, w/o Vents, Except Station Wagon CR-20A 1967 - 71 Gas Tank, w/ 2 Vents, Except Station Wagon CR-20B 1967 - 71 Gas Tank, w/ 4 Vents, Except Station Wagon CR-20C