Toyota Mark X late 1960s. Instead of being based on a modified Supra chassis "A" series platform, the Mark X continues to use the Toyota "X" platform, and does not share its platform with the Toyota "S" series platform used under the Toyota Crown and the Lexus GS. The continuation of describing this vehicle as the "X" series is a reference to the first dedicated Mark II platform introduced in 1972. Major changes to the Mark series are the engine and footwork. Toyota discontinued the straight-six engines used in the Toyota Verossa, which included the JZ series and the G series engines, and
Toyota Hilux market until 1972, allowing the Datsun Truck to maintain a strong market presence. The Hilux was offered as a replacement to the Toyota Crown, Toyota Corona, and Toyota Corona Mark II based pickup trucks in Japan, as the Crown, Corona, and Corona Mark II were repositioned as passenger sedans. In spite of the name "Hilux", it was a luxury vehicle only when compared to the Stout. The Hilux was engineered and assembled by Hino Motors to replace the earlier vehicle that the Hilux was derived from, called the Briska in the niche beneath the larger and older Stout – it