fuel pump and filter
 

Hey, just a stupid question that I am sure I already know the answer to. On my 01, the fuel pump, pressure regulator, and filter are all one unit in the tank, right?

I know on the newer XJs like yours that the pump and filter are in the tank. On the older 4.0s the fuel pressure regulator is on the very front end of the fuel injection rail on the motor. You can't miss it. It has a vacuum line going to it. Hope this helps.