Watch for a 125 pto hp 1975 JOHN DEERE 4430 tractor on a 4-16 International 720 plow, a 113 pto hp 1969 INTERNATIONAL 1256 Turbo tractor on a 5-18 International 720 plow, a 161 pto hp 1976 INTERNATIONAL 1566 tractor on a 6-18 International 720 plow and a 320 hp 1974 STEIGER Turbo Tiger 4wd tractor on an 8-18 CASE 700 plow.