Hey Broncobowsher, I've been looking at the Duff Ford Disc Brakes product, I'm doing a bit of research on the GM product also, it seems you can get thoses parts just about anywhere! Thanks again!Duff has been making there own kit, with there own knuckles, based on the later Ford parts. Been doing it that way for 30+ years.
When you swap the knuckles, it is alignment time. Spindle swap you can get away without an alignment.