Don't wait for the inevitable.
Mine went @ 65K kilometers.
This is a Weekender, so I noticed a small amount of coolant in the engine bay being spread out over the hood lining.
I knew about the problems these cars had with water pumps.
So I purchased everything I needed.
Stewart Pump, hoses, thermostat, belts & of course coolant.
I put aside the Saturday after I received all the parts to do the install.
The friday before that, it was a glorious day, so I took her out for a spin. 1 block away from home the pump bearing disintergrated.
Took out my fan, fan shroud, & rad., but fortunately not the hood.
I was without the car for about a week, while I waited on the additional items to be delivered.
The whole operation of removing the old and replacing it with new, took me about 3 hours.
So a word from the wise, If the boys on these and other forums say change the pump around 60K then do so.
Mine is a 2001 3.0 roadster, it is 10 years old. only 65K kilometers.
This spring it's Lube time. Tranny, Diff, Brake fluid and Power steering fluid flush time.
BTW If you are going to get into the front of the engine, then do the Thermostat, hoses & belts as well.
It's good insurance, and easy to do while working there.
Just my 2cents.