How many miles have you seen on original water pumps? Mine has 93k.

In most cases, Miles doesn't mater.

Most pumps I've replaced go bad because old and/or weak coolant fails to protect the seal. Part of coolant additives are lube and plasticizers for the seal. (Plasticizer keep it soft etc.)
Many people think using 50/50 premix after flushing is good but guaranties weak coolant because engine and other places hold plane water.

Bad Bearing for alt, WP, and others is often cause by people over tightening the belt(s). That can kill them very fast or wait a few month to couple years depending how tight.
Is why most OE Serpent belt setups use a spring tensioner. Keep belt tight all the time but won't wreck WP etc.

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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

Make sure you get a quality replacement. Bad pumps have a simple press fit plastic impeller that loosens up from age and heat. It wont leak and the pump looks like its turning ok...but...the impeller is just spinning loose inside and not pumping much coolant. Ill bet this is a lot of causes of engine overheating that people never consider.

Never, ever use a water pump with a plastic impeller; The plastic impeller is in direct contact with the hot water, while the steel shaft is not...The plastic is more thermally active(Expands faster) than the shaft, so it expands and freewheels while the shaft continues to spin as if the pump was working.

My car would overheat at the same place on the freeway going to work(3 times)...First I removed the T-Stat, which lessened the drag on the impeller.....Once I figured out what was wrong, i installed a new, steel-impellered pump- No problems since.

quote Originally posted by 88 fieroGT: How many miles have you seen on original water pumps?

If it turns out you need to replace yours, lots of info in This thread from when I replaced the water pump in my '88 Formula.