I had the foam in for a long time on a 16 gallon jaz and then decided to take it out. They say you need to always keep the foam covered with gas or it will dry out and degrade? I don't know. I just went and used an inline fuel pump and mounted it to the inside of the frame rail. I don't know what kind it was, just some generic one. From what I've seen, the autozone one is really loud. Some people use a bosch inline pump as well. You can find them for about $20 on ebay. Good luck.