M-R-S produced its A-90 farm tractor model From 1962 Until 1963 in United states with a Open operator station cabin. Talking dimensions and weight, this model weighs 24000 lbs or 10886 kg has and 114 inches [289 cm] of height while maintaining a wheelbase of 100 inches [254 cm] and a ground clearance of 16 inches [40 cm] the front tread is about 75 inches while the rear tread is 75 inches . This tractor can fit ag tires of 18.4x26 front and 18.4x26 back . This M-R-S A-90 is powerd by a diesel engine it has 401 ci or 6.6 L 6 cylinders ,it can produce 123 hp or 91.7 kW at 2200 (rpm),. This machine has 4x4 4WD wheel drive system,10 forward and 2 reverse transmission system.