Estate Wagon Gas Tanks Estate Wagon Gas Tanks Year Description Quanta # 1970 Gas Tank, Station Wagon, w/o E.E.C. GM-38A 1970 - 74 Gas Tank, Station Wagon, w/ E.E.C. GM-38B 1975 - 76 Gas Tank, Station Wagon GM-38C 1977 - 89 Gas Tank, Station Wagon GM-505
