I did mine a little easier. I took dual piston caliper brackets off of the front of an f-250 they have to be the 4 and 1/8 inch hole or it wont work and than I stuck them on the rear and squared them up marked the holes and drilled them out bolted them on and used the hub off the front of the truck and they work great if you want to see a detail of what I did go to projectbronco.com and go to links and personal home pages and then to kevens then look for the conversion I used origonal parts for that year! You have to use at least 16.5 inch tires so you can have them balanced. Any question you might have just ask and I will send pics and answer whatever I can!