Welcome to this forum. Regarding your truck was it drivable at one time? The master cylinder sits on the firewall on driver's side. Those early trucks have a single resevoir master, I would recommend putting a dual one on for safety. Sheet metal is pretty sparce, but they do sell patch panels. Since it is a 57, only fenders from 57-58 will fit, 59-60 are different. They are pretty cool old trucks. One idea, if you run into a good parts truck, this could save in trying to find parts. Good luck and let us know how it is going.