hey andy, you got a nice truck there I got one just like it, and I found all the brake parts I needed at NAPA wheel cylinders brake shoes 12x2 for front and 14x21/2 for the back they have brake shoe adjusters too and the rubber brake lines for the front and the one for the back. the only thing I couldn't get was a spring kit. almost all the parts also said made in USA, I couldn't believe it. they must have been on the warehouse shelf for awhile, most parts I can find at a good local parts shop or NAPA find a shop that has the old parts books or just ask the guys on here I can't tell you how many times I have asked if anybody has the parts number for a part, I almost always get the parts number or info on who's got it and where to get it. if you change out the rearend save those big brake drums, I don't think they are easy to get. I believe my reareand is the same as yours but I have a 283 with edelbrock intake and 4barrel carb with 350 turbo auto tranny and 17.5 wheels i think top speed is supposed to be 70MPH at about a million RPM that's fast enough for 54 years old with semi power brakes
