1970: Foundry is built in Ogasa, Shizuoka, Japan; automobile plant is built in Kosai, Shizuoka.[34][35] Frank Whiteway easily wins the 500cc class at the Isle of Man TT race on a production T500 motorcycle prepared by Eddie Crooks.[36] LJ10, the first mass-production 4x4 domestic mini-car, becomes available in Japan, powered by a 360cc twin cylinder air-cooled two-stroke engine.[37][38] 1971: Production plant for medium to large motorcycles is built in Toyokawa, Aichi, Japan.[6][35] GT750 motorcycle debuts with a liquid-cooled two-stroke straight-three engine.[39] Suzuki's production motocrosser, the TM400, arrives to participate in 500cc class Motocross World Championship racing.[40] Suzuki rider Roger De Coster becomes the 500cc class World Motocross Champion on his 396cc RN71 factory machine, while teammate (and fellow Belgian) Joel Robert becomes 250cc class champion.[41] 1972: Suzuki Parts Manufacturing Company, Ltd., is established in Akita Prefecture, Japan.[35] The Hustler 400 (TS400) motorcycle released as a street version of the TM400.[40] 1973: Jitsujiro Suzuki appointed as president, and Shunzo Suzuki appointed as chairman.