Most parts catalogs list the parts specifically for the 3/4 ton models, so you can order without disassembling your truck. Below is a page from lmctruck.com showing their brake components.
Unfortunately the registration # XXXXX XXXXX the serial # XXXXX the engine. You will need to check the numbers on the I D plate inside the drivers door opening. The link below will be helpful in deciphering the I D plate number. Car manufacturers did not include as much information in the VIN number in 1953 as they do now.
The base engine in your truck was a 228. There was an option for a 248, but very few trucks received the larger engine.
Another helpful website for information on these trucks is below.