Noted Japanese tuner Mamoru Moriwaki plans to build a four-stroke racebike to compete in the Grand Prix World Championship in 2002. Moriwaki, who made his name building innovative complete chassis powered by both Superbike and 500cc GP engines starting in the late 1970s, has not decided which brand of engine to use in his racebike, according to his daughter, Midori, who handles export markets and manages the race team for Moriwaki Engineering. Moriwaki Engineering’s primary business is manufacturing aftermarket exhaust systems and camshafts. Mamoru Moriwaki’s son, Shogo, raced a Honda RS125 last year and will compete in the 600cc Superstock class of the All Japan Championship series on a Honda CBR600F4. Moriwaki was a key figure in the development of 500cc World Champion Wayne Gardner’s early career, which saw Gardner racing Moriwaki Kawasaki Superbikes in Europe and in Japan.