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Plough, disc, and rotary tiller work. Size HP from the implement width, not from a brochure maximum.
The JT-704 is the usual tillage inquiry: 70 HP, 4WD, Category II, dual-stage clutch. Wider discs and heavier ploughs move you to the 90 and 120 HP cab machines. Continuous large-field work is the 160–220 HP class.
Send the implement you already own. A 3-furrow plough and a 1.8 m rotary tiller are not the same drawbar job.