I've replaced very few things on mine. The water pump is the biggest. I'm still on my original clutch, bearings, starter, alternator, etc.
Just like most other cars, some are better, some are worse.
98 Contour V6 MTX, T-Red, 150k mi.
Pic
SVT Dual Exhaust, KKM Intake, Donnely Mirror, Dension DMP3 Player w/80GB of MP3s, Wheelskin
95 F-150
91 Mustang GT
06 Honda Shadow Aero