If you have never done this before,this will help & yes replace the distributor at this time.
Water Pump Replacement (5.7L VIN P)
Tighten Tighten the coolant drain hole plug to 18 N·m (13 lb ft).
Important: Do not allow foreign material to enter any open vacuum lines. Cap the ends as necessary.
Important: Do not attempt to fully seat the distributor using bolts or screws. If the distributor does not seat by hand, then it is not properly aligned with the camshaft.
Tighten Tighten the distributor bolts to 12 N·m (106 lb in).
Greetings: After hours of frustration and lossing my tools into the bottomless pit of a engine compartment I gave up. I could not remove the air pump bracket on to allow the pump to pass over the stud. What was i missing here the manual and instructions does not really give you a clue as to what to do in a sequence. Can you ellabrate more on this. Anyway what is the standard cost to R & R the pump and tuneup the distributor including plug wire replacement and new sparkplugs. The vehicle has 94K and I would assume will need all the above since it is still running fine on the factory equipment. Thank you for your help but I have skinned hands and a broken ego on this job. the vehicle is all back together and driveable and rady to go to the repair shop.
Replacing the plugs on this vehicle is 4.0 hrs
replacing the distributor & water pump is 3.5 hrs.