I have 1954 3600. Been looking for disc brake kit. Saw this one on Ebay. Took a chance and guess what fits like a glove. rotor slides over hub and centers right over lip where drum used to sit.Bottom bolts were too long so cut them back 1/4 inch. had to massage top of lower tang just a little because it and the two lower bolts hit the I beam on full turns. Used CPP master and booster kit also. Stops great.Ebay link is http://www.ebay.com/itm/350973126802?item=350973126802&viewitem=&sspagename=ADME%3AX%3ARTQ%3AMOTORS%3A1123&vxp=mtr&rmvSB=true

Caliper # 4208 & 4209
Rotor # 55057
You guys with these trucks should look into this. 3 Hours start to finish.He will sell just the bracket for 125.oo if you want to find your own parts.