Terrill Machine in DeLeon Texas has advertisements in Hemmings and from time to time the Bugle. You will find them knowledgeable and very responsive with good quality parts. They can sell you the fuel pump you need along with a good quality rebuild kit for your carb. One real advantage to rebuilding the carb (in addition to the satisfaction of completing it yourself) is that you will become aware of the function of all the parts. So, if you need to adjust your mixture, idle speed, or the automatic choke you will know right where to go. 53 Supers could come with either a Carter or a Stromberg carb so be sure to verify what you have before ordering. Before putting your clean tank back on the car, it would be a good idea to remove the fuel line at the fuel pump and clean out the line back to the tank. This will also help you identify whether there is any rust out in the fuel line as well. I cleaned my fuel line by picking up a large (1" diameter) syringe, filling it with laquer thinner, and then forcing it thru the line. When that was done I used shop air to blow out the line. You dont want to put a clean tank, new fuel pump, and rebuilt carb on the car only to plug things up from a dirty fuel line. Good Luck!!