the 389, but an altered, reduced bore. The car's body and suspension were also changed to be lower, longer, and wider. The response was that more than half of the 1963 Tempests and LeMans (separate lines for that one year only) were ordered with the V8. The next year, the 326 became a true 326 with a new bore size of 3.72. The Tempest's popularity helped move Pontiac into third place among American car brands in 1962, a position Pontiac would hold through 1970. In November 1961, Knudsen moved to Chevrolet. Pete Estes now became general manager of Pontiac and DeLorean was promoted to Pontiac chief engineer. Both continued Knudsen's work of making Pontiac a performance-car brand. Pontiac capitalized on the emerging trend toward sportier bucket-seat coupes in 1962 by introducing the Grand Prix, taking the place of the Ventura, which now became a trim option on the Catalina. Although GM officially ended factory support for all racing activities across all of its brands in January 1963, Pontiac continued making larger engines with more power available across all model lines. For 1963, the Grand Prix received the same styling changes as other full-sized Pontiacs such as vertical headlights and new body lines with a squared-off roofline with a concave rear window, along with less chrome. The concave rear window was replicated on Tempest/LeMans four-door intermediates in 1964 and 1965. For 1964, the Tempest and LeMans' transaxle design was dropped and the cars were redesigned under GM's new A-body platform - frame cars with a conventional front-engined, rear-wheel drive layout. The most important of these is the GTO. In spite of a GM unwritten edict against engines larger than in intermediate cars, DeLorean (with support from Jim Wangers from Pontiac's ad agency), came up with the idea to offer the GTO as an option package that included a engine rated at . The entire Pontiac lineup was selected as Motor Trend's Car of the Year for 1965, the third time Pontiac received this recognition. The February 1965 issue of Motor Trend was almost entirely devoted to Pontiac's Car of the Year award and included feature stories on the division's marketing, styling, engineering, and performance efforts along with road tests of several models. The GTO was split from being an option on the Tempest LeMans series to becoming a separate GTO series. The 1966 model year saw the introduction of a completely