BBP Rotors, Spindles, Calipers, Lower Control Arms, Strut Rods, ETC

So all I would need is the upper control arms in order to convert my drums to disc? I got a 69 My bolt pattern is 4.5x5. I just took my pitman arm off and my idler arm all by myself with one arm I do all the work myself. So there are some things that I don't know which is whether or not that's good for my car. I know that the hubs I have right now are shot and I've been trying to find replacements but I'm just done