The B was designed to pull one single-bottom plow at a time. Standard plow arrangement for the B was 2-way mounted plows (no 3pt)...one bottom was right handed and the other was left handed for plowing a single furrow in each direction.
Standard disc harrows for the B (pull behind - no 3pt) were six feet wide in a four gang configuration...two gangs forward and two gangs to the rear. The B will pull this configuration nicely. They are, however, not intended to be raised with any type of lift mechanism.
Hope this helps you out.