Your truck will have what are called Huck brakes and will be the same as your parts truck. I would disagree with your statement that you leave the brakes and steering to a professional because you can learn to do this safely on your own. If the shop you chose knew what they were doing they would know all about the brakes when you brought the truck to them, not two months later. I agree that a dual master cylinder is a safer design than the stock master cylinder but I don't think that is a top priority. I have kept all my trucks stock. What you should do, however, is replace most elements of your brake system including lines and hoses. You can reuse the brass junction blocks, if you don't damage them on disassembly. Retain the wheel cylinders and master cylinder and send them to be relined with brass or stainless steel. You may get lucky and find some new old stock (NOS) cylinders on Ebay but relined cylinders are better because they won't corrode and pit. You may be able to find ready made brake lines at Inline Tubing but if you invest in a decent flare tool and use copper-nickle alloy tubing you can make your own. You also need to invest in a set of brake line wrenches. All of this will cost less, including buying the tools than paying a professional. You will get the satisfaction of knowing it is done correctly and safely and your system will more corrosion resistant than when it was new.
Another issue is that you will probably not be able to find new drums. They may, or may not, need to be turned. Brake shoes can be sent out to be relined. After relining they will not be real efficient in stopping your truck until they wear in (several hundred miles of panic stops!) so in the old days they ground the shoes to match an individual drum. It is hard to find a shop that will do that and shipping to the lower forty would make that cost prohibitive, so Hot Rod Lincoln on this site has several times described a procedure to quickly wear in the shoes by using water soluble glue and glue sandpaper onto the drum surfaces (then dismount the drums and soak the sandpaper off).
Hot Rod and others will tell you that Huck brakes are a real pain and that may be true if you are planning a daily driver putting 1500 miles a month on the truck. This brake system requires adjusting the shoes every 1-2K miles, checking brake fluid frequently, etc. If, however, you will be driving it for pleasure and infrequent haulage, then you will be pleased with the performance of your stock brake system.
Kent
