You have a number of alternatives on the fuel pump i.e.purchase new/used/rebuilt or rebuild it youself. If it is the newer, small style pump, these are much easier to rebuild than the older, large style pump. I've done both. A major problem in rebuilding either of the pumps is getting them apart. Many well intentioned efforts further destroy the pump especially if most of the screw heads are torqued off in the process of disassembly. Let me know what pump you have and whether you want to give it a try--I'll walk you through it. Do a seach on this topic in this and the other 113 forum and you'll find that this is a very popular topic.
George Des