D-21 Hardbody and 720 (beside being trucks) are similar in steering and oil pan placement. Trucks are steered from in front of the oil pan. Car KA engines have the steering back by the firewall. Thus truck oil pans are deeper towards the rear to leave room at the front for steering linkage clearance while cars are opposite. I don't know if the 2wd KA truck oil pan needs to be modified to fit a 720 but it will sure be easier than a car KA engine.