Coupe, still a pillar-less hardtop, now used larger roll-down quarter glass like that of the 1971-73 Custom Coupe, and had a narrower, fastback style, flat back window similar to the 1966-68 Caprice coupes. The four-door sedan, four-door hardtop Sports Sedan and station wagons used carryover rooflines from 1973. Engine offerings included the standard 145-horsepower 350 Turbo Jet V-8 on sedans and coupes, optional 150- and 180-horsepower 400 Turbo Fire V8s (the latter standard on Impala wagons), and 235-horsepower 454 Turbo Jet V8. In California, a 155-horsepower 350 V-8 with four-barrel carburetor was standard and the only engine options there were the 180-horsepower 400 and 454 V-8s. 1975 The 1975 Impala used a 1974 carried-over Caprice front end, with a grille insert and emblem change. The Caprice model carried a new front end with a swept back style header panel with recessed headlight buckets, a new hood, and new fenders. Also in 1975 upholstery, door panels and the dashboard were revised as were the radio and climate control graphics. Speedometers read up to , and added kilometers per hour. 1975 officially debuted a high-energy (HEI) electronic ignition system. Catalytic converters were also introduced as were several new options, including an Econominder gauge package, intermittent wipers, and a divided 50-50 bench seat (with a choice of sport cloth or vinyl trim). A Landau appearance package was new for 1975. It featured an elk-grained landau vinyl roof (with a chrome band across the roof), a choice of special paint colors, sports-styled dual remote outside rearview mirrors, color-keyed wheel covers, a vinyl bodyside molding insert, and pin-striping. Inside were color-keyed seat belts and floormats; fender and dashboard emblems rounded out the package. (An identical trim package was also sold on the Caprice model.) Sport Coupe models were discontinued after the 1975 model year, leaving the redesigned Custom Coupe, with its wide "B" pillar and fixed rear window, the only 2-door Impala available in 1976. Engine offerings were similar to 1974 except that the 400 Turbo Fire V-8 was now only offered in four-barrel 180-horsepower form and the 454 Turbo Jet V-8 was no longer offered in California. 1976 The 1976 Impala used a previous year Caprice nose, with a new "egg crate" grille insert. The Impala had round headlamps while the Caprice used the new quad rectangular ones. Engine offerings were the same as 1975 in both 49-state and California offerings. This was the