Front disc brake conversion

I have a 69 Road Runner which I would like to convert the front brakes to disc. I've heard 72 & up "A" body disc brakes will work. I know there are kits you can buy from $400. up to $1200. I've heard there are brakets you can buy to do the conversion. Any input on what is a good way to do this? Thanks, Bob
Author: BOB P