I need advice. I have a 2001 with a whine at temps over 100ish degrees. I have narrowed it down to a lift pump only putting out 9psi at its best. My question is, is the intank fuel pump something that has an upgraded kit that does not require any change to the plumbing or electrical circuit? I'm not anticipating on keeping this truck forever but I need it for now. Just looking for a good fix for a few years.