I've done this job a couple of times. There's much tedious disassembly to access the water pump, but none of it is rocket science. All tools required are available at your local tool emporium. The unusual tools I recall are the locking tool for the fan clutch (made my own from 1/4" steel rod purchased at H.D.), an 8mm allen key for the fan clutch hub (some like the special stubby socket, but I use a regular old allen key without problem), a 10mm allen key socket for the belt tensioner, and a 6mm allen key and/or socket for the water pump bolts.

There are enough discussions and step-by-step guides here on the forum that I wouldn't avoid this job due to lack of a service manual.

The vendor I use shows a price of $175-$195 for the water pump, depending on engine number and manufacturer.

- JimY