[DavidG]

Prior to a late change in the frame rails when the three mounting holes for attaching the steering sector housing were slotted there were two different sector housings for passenger cars and commercial vehicles and those sector housings were stamped with the letter A (for passenger cars) or B (for commercial vehicles). They are visually different as to the placement of the three holes for the attachment to the chassis frame rail to accommodate the difference in cowl depths which results in less slope of the steering column in commercial vehicle. The steering column support bracket that attaches to the dash was the same for both passenger cars and commercial vehicles.