I have a ****** 90 250 4x4 CTD, after I do all the usual mods to the fuel pump, Do I need a power pin? And at what point do I need to upgrade the lift pump? I got the truck to pull my car trailer, and buzz around town. I have a EGT guage, then I'll do the exhaust, then the fuel pump and hopefully put a IC on it. Am I missing anything?