Search and you will get more Info. I personally wouldn't bother. The drums work fine and the front brakes do most of the work anyways.

http://tsmmfg.com/2530.htm

http://www.nloc.net/bigd/public_html...ake%20only.pdf

4 pages of search results
https://www.ford-trucks.com/forums/s...=2724101&pp=15