I have a 1990 b2600i that has a rusted out fuel tank. I bought a new one online and noticed that the sump location is different. My old one was more of a mid tank and the new one is right below the fuel pump opening. My question is, would anyone have the part number for the fuel pump hanger for the new tank. Or would it be easier to modify the new tank to fit the old hanger? It is a regular cab model. Thanks