73 Duster front drum to disk conversion
This article pretty much sums up disc brake conversions using factory parts.
http://www.moparaction.com/Tech/archive/disc-main.html
Sure, except for the minor detail that it's
100% wrong about the FMJ spindles. Ehrenberg didn't check the geometry, he didn't install a set of FMJ spindles and put his car on a rack, he just assumed, incorrectly, that because the FMJ spindles were different they were bad.
They aren't. Mopar Muscle actually did the comparison of all the stock geometry compared to the geometry when using FMJ spindles. The result? The geometry is different, but the difference is small enough that the average driver would never notice. Not only that, but the FMJ spindles actually provide BETTER geometry for lowered cars with wider tires. It's all in there. The geometry and camber curves are also handy for showing how good the geometry of the torsion bar suspension actually is too.
http://www.hotrod.com/how-to/chassis-suspension/mopp-0503-swapping-a-and-b-disc-brake-spindles/