@BrianW, A whole bunch of stuff you read around the web is horse droppings written by folks who have never done the job! Beware! On the other hand, what you find here is usually pretty accurate 'cause sooooo many already have the books!
You have picked just about the easiest power brake swap there is! You will need the master/booster combo and the mounting brackets with the levers and arms. Add the vacuum line, look at the fitting on the booster for size, and you are good to go. No matter what on-line sales companies say the bias valve doesn't care what pushes it. Your original will work fine! A booster does NOT add pressure to your brake system! It lowers the "perceived pedal pressure." That and the other work you do on your brakes will make them feel like they will stop on a dime.
I'm getting ready to do the same job on my 1969 C20 Panel truck. I'll document the job and post the pictures to
http://s1109.photobucket.com/albums/h430/Roadmarks/ which is my Photobucket account. Feel free to keep my addy from my profile and get in touch if you need help!
BTW, I think KevinW is right about the wheels and even some of the 15" ones. Autozone PN is 50-1011 for around $110 + core for master and booster together! Try the local stores first before ordering on line.
You'll love the '64 C20!
There is no place for us, so we 3/4T guys have to stick together!
