1958 saw a new, larger windshield, and a larger, rectangular windshield out back. Anti-sway bars added in 1960 improved handling, 1961 models received automatic choke, and a gas gauge was finally realized in 1962. A sliding steel sunroof replaced the outmoded "rag top" in 1964, and all windows were enlarged in 1965, including the windshield, for 15% more glass overall. Engine output reached 50-hp in 1966, with cars of that year badged "1300," in reference to the 1285-cc displacement. Displacement increased again for '67 to 1493-cc, indicated by a "1500" emblem on the deck lid. Door buttons now locked.