 They were so successful that they were closely copied as the ZiS/ZiL 151 and 157 family of trucks, built in the USSR until 1966 and in China until 1986.The International design began production at Ft. Wayne, Indiana, in 1941.500 M-5-6s and 3,000 M-5-6x4s, with a commercial K model cab, were complete by 1942, and were exported to the Soviet Union.