I just replaced the water pump, thermostat, and upper/lower rad hoses a week ago. I used the napa water pump and all is fine.
Break fan bolts loose before serp is off, check all pulleys and idlers for scratchy bearings, remove water pump, clean gasket surfaces, wire wheel bolts if reusing, put thread sealant on bolts, hang gaskets on the bolts poking thru water pump, bolt water pump back on (no RTV needed), reassemble. When changing the lower rad hose, make sure to put the spring from the original hose inside of the replacement hose.