I have been cutting and hacking and replating the rear of my xj. I made new raised shock mounts and would also like to add a fuel cell. As of right now I have moved the gas tank up, but would like to remove the factory tank all together. I searched here and found a few things, but not what I was looking for. I seen in 1 post where someone said us a E2000 pump. Is that all the info I need when going to advance, is it a internal pump or external pump? What fuel cell do I need to use. One post said a RCI-2161A cell. I will be doing this in the next few days.