James Duff kit
The James Duff kit, PN 3250, is based on the Ford F-150 two-wheel-drive steering box and comes complete with pump, belts, hoses, brackets and adjustable drag link. Kit does require some welding. Installation shows the adjustable drag link and steering box, pump, hoses, steering shaft and belt in position. Note that box mounts to the inside of the framerail.
You will then have to supply a two-sheeve crank pulley and water pump from a Ford truck that has been equipped with a 302 V8. The stock steering shaft is then cut less than an inch and a new pin hole drilled. The part number for the conversion kit with steering box for '66-75 Broncos is 3250, while the kit without steering box is part No. 3275.