Hi, I just aquired a 1990 yj with a fuel injected 360 swap . I am replacing the fuel tank, a 15 gallon steel one with new 15 gallon one. The previous owner states that the original engine was a fuel injected 4.0 but what I am not sure what in tank pump I need. It has an external electric high pressure pump with a regulator, sucking gas from a bottom outlet on the tank (previous owner mod) and no in tank pump. I plan to keep the external pump but add an in tank pump as well. The problem is that the pump assemblies that I can find for that tank states that are for a 4 cylinder engine with the 15 gall tank. It seems that there is 15 gallon tank 1990 YJ with a fuel injected 4.0 and an in tank pump? Thanks for your help and excuse if confusing.