and rear power take-offs were available for heavy-duty utility applications. Shortly after the introduction of the Wagoneer, in early 1963, Willys Motors changed its name to "Kaiser Jeep Corporation". The 1964 models introduced factory-optional air conditioning, as well as a lower-compression Tornado engine, to remedy cooling problems and "pinging" at altitude the original had sometimes suffered. While it made less power, it returned greater economy, but this lower-compression version was phased out within a year. 1965–1966 As of 1965, all models came with a new standard safety package that included front and rear seat belts, a padded dash and high impact windshield, and a dual braking system. Late-year 1965 Wagoneers and Gladiators were available with the AMC V8 engine, which proved to be a popular option. Additionally, the Tornado engine was replaced by American Motors' OHV inline six. According to the automotive press this engine was smooth, powerful, reliable and easily maintained, but most likely it was cheaper. Although the independent front suspension was positively reviewed, the option was not popular and was dropped from production, at least for the 4WD models, in 1965. Super Wagoneer The 1966 model year also saw the introduction of the more luxurious Super Wagoneer, identified by a new more modern-looking full-width grille. Initially sporting a higher-performance version of the AMC V8, fitted with a four-barrel carburetor. With comfort and convenience features not standard or even available on other vehicles of its type at the time - e.g. push-button radio, seven-position tilt steering wheel, ceiling courtesy lights, air conditioning, power retracting rear window into the tailgate, power brakes, power steering, and console-shifted TH400 automatic transmission – the Super Wagoneer is now widely regarded as the precursor of today's luxury SUVs. Production of the Super Wagoneer ended in 1969, and in total it is believed that 3,989 Super Wagoneers were produced. 1967–1971 Between 1967 and 1969, all rear-wheel drive only models, which the four-wheel drives had outsold from the beginning, were discontinued, and from then on all Wagoneers and Cherokees had solid axles and leaf-springs, both front and rear. At the end of 1968, the slow-selling two-door versions were also discontinued. For 1968 through 1971, Wagoneers were powered by Buick’s Dauntless V8. The Dauntless made less horsepower than the previous AMC V8 (230 hp vs. 250), but more torque at lower rpm ( at 2400 rpm versus at 2600). After the 1971 model year, Wagoneers were