Well, this was going well...I have the engine's correct TDC determined (thanks GAmes) and went to check the the timing alignment under the plug on the side of the IP. The good news is the metal 'tang' is just where the photos say it should be; the bad news is the plastic locating plunger used to lock it down was broken sometime in the past (one ear is broken). I'm not quite sure how to proceed. I'm guessing the little plunger needs to be replaced (any suggestions?), but I still need to get this pump off so I can replace the leaking tappet cover. How can I best proceed? Also, how does one best keep the engine from turning over while trying to loosen the 30mm nut on the IP? This truck is an auto. Thanks guys!