Gang,
For those looking for the conversion parts Ebay is a good choice but don't forget about Mustang boards. The Corral is an EXCELLENT site to find the parts you need. Most Mustang guys upgrade their brakes and have the old stuff we need lying around. I picked up everything i needed, short of calipers and rotors, plus i scored a used limited slip diff from the same cat for $100 for everything. I may be the exception but it's worth a try.
To me, i do not trust used calipers and lines. Nothing against anyone selling them, i just prefer to spend the extra $$$ on new "consumables".
Again, try our Mustang brethren if you're short on options.

Oh, and a huge thanks to the TS. Superb article.