ok so I have a 2005 f150 with a 5.4 and in January I replaced the phasers, solonoids, tensioners, guideplates, chains, and even the crank sproket. While it was all open i did all the plugs... and now just this weekend I lost all oil pressure so I shut it off (i was still in the yard.) So I plan on pulling the motor this week as i have most days off of work and replace the oil pump. What else should I do while I have it all apart? And where exactly is the oil pump? some people told me its on the front and others say its in the pan?