greatly improved the cars' stopping power. In the engine lineup, in addition to the existing six-cylinder and V8 engines of the past, new options were added for the 1963 model year. Naturally aspirated "R1" and supercharged "R2" 289 V8s from the Avanti were made available. Buyers choosing those engines late in the model year could also order a "Super Performance Package", which added a host of high-performance options aimed at making the cars not only go faster, but handle better. Cars equipped with the package were called "Super Larks". Though the 1963 models were seen as an extension of the improvements made the previous year, the buying public by this time was looking for more than just a mild change, and sales fell, this time to around 77,000 cars. Gallery Third generation (1964-1966) Studebaker's executives allowed Stevens to continue the process of modernizing main line vehicles that resulted in a more extensive (but still inexpensive) restyling for 1964. What resulted was the most mainstream looking Studebakers since 1946. The Hawk-like grille of 1962-63 gave way to a full-width, stamped aluminum grille and squared-off headlamp surrounds. Stevens flattened the hood, roofline and trunklid, and reworked the tail panel to incorporate new horizontal taillamps and backup lamps, all the while ingeniously retaining the sculpted quarter panels introduced in 1962, which still suited the new look and reduced by a considerable amount the cost of tooling. The new look debuted along with the company's plan to phase out the Lark name entirely. The lowest-priced models were renamed Challenger (replacing the 1963-1/2 Standard), while the Commander name (which had last made an appearance in the Studebaker lineup on the last full-size cars in 1958) replaced the Regal trim level. The Daytona series added a four-door sedan (replacing the 1963 Custom four-door), and the Cruiser continued at the top of the line. All models except the Cruiser offered a Wagonaire. Challenger and Commander models came standard with single headlamps, the first time since 1961 that a Lark-based vehicle offered them. Dual lamps were an extra-cost option. For 1964, the Lark name was only used on early Challenger and Commander models. Early promotional materials referred to the Challenger and Commander as Larks, but aside from Lark emblems on the roof sail panels on Challengers, there was no Lark identification on the cars, as Studebaker replaced the Lark emblems elsewhere on the car with the company's "circle-S"