Ford Tractor: 600, 660, 661, 800, 860, 861, 900, 960, 961 (with 5 speed transmission and live PTO) 2000 4 cylinder, 4000 4 cylinder, 4120, 4120 (1955 - 1964)Dexta, NAA, Super Dexta, 600, 601, 660, 661, 700, 800, 801, 860, 861, 900, 901, 960, 961, 2000 (4 cylinder).