disc brake conversion

Are you using a kit, junk yard parts, or a combo of parts? When I did mine I used the spindles calipers and rotors off of a 74 dart with a master cylinder for a 85 5th ave (if you use one like that you have to use an adapter and be sure its machined for the push rod keeper bushing and make sure the master cylinder has a bushing with it). If your getting your parts from a junk yard be sure to get the proportioning valve. I would look for cars that still have fluid in the master cylinder so that seals are not dried out.