ECI is another brake kit vendor. They used to go to Carlisle but I haven't seen them there in years. Ralph is the guy's name IIRC. I spoke to him there one year and and was impressed with his engineering of the kits and the reasons he chose the components he uses.

He lists a kit for a 52 Dodge pickup, whether the spindles are the same as yours or not, I don't know but he could tell you if they would work or not. He used to offer a kit IIRC for A100 and I think D100 Sweptlines too but I don't see them in the catalog.

He sells a pretty spiffy looking tube bender too.

http://www.ecihotrodbrakes.com/index.html

Kevin