The Stovebolt Site Forums The Parking Lot Big Bolts 1942 1-1/2 ton brake replacement

I am the lucky owner of a 1942 Big Bolt tow truck "opportunity". Character galore (neighbor kids call it Mater) and can't wait to get it back on the road. I'm a newbie to restoring old trucks and I know, the Big Bolts aren't the best ones to start with, but up here in Alaska we can't be too picky about old vehicles.

There are two things I've told myself I will leave to a professional: brakes and steering. That much steel going down a road uncontrolled will be bad for both sides. Due to the age, I'm wanting to get everything on the brakes replaced or restored.

So after calling around during the winter, I found a shop that would work on the truck. Truck has sat in their yard for two months and they are now telling me they can't find/don't have the time to find the parts. I read through the forum threads and didn't see something of this era/size so if it has already been answered, I'd appreciate notes on where to research.

First question: I'd love to replace the existing master cylinder with a dual master cylinder for extra safety. Anybody have luck with that in a 40's Big Bolt? Where can I look?
Second question is where to find parts? I've read enough threads to hear EBay may be the only answer. Problem is, I'm not really sure what I'm looking for (newbie). I've attached a picture of what the shop had written down so far. Hopefully this looks familiar to someone.
Third question (I'm sure I'll have more): My mechanic said that there is no one up here in Anchorage left who can do resurfacing. Anyone have some recommendations in the Northwest that I can get a quick turnaround on this? Mechanic doesn't want me taking up one of his lifts while he waits for parts.

A potential benefit is that the original owner also had a '46 1-1/2 ton for sale for parts that I also bought at the same time (again, can't be picky and you buy what you see, when you see it). I'm not sure if these will have the same brakes as the '42. Anybody know this? There is the possibility I could have those parts sent out to minimize the time the '42 is up in the air.

Thanks for your current (and future) help!