disc brake conversion

[69blue]

I have a question that I know someone can answer! I own a 69 c-10 2wd drum brake truck. I purchased a 71 c-10 2wd with disc and 5 lug. My 69 has power drum brakes and 6 lug hubs of course. My question is, when converting to the 5 lug, and disc brakes, do I have to change brake boosters, porportioning valves? Also, on the rear, do I have to change the whole rear end, or can I get by with changing just the axles and the backing plates along with the brake shoes? I almost forgot. Do I need to change more than just the spindles on the front, or is there something else I am not seeing? I know someone out there has been at the same point that I am at. Look forward to some info. Thanks, 69blue.