'92 Sedan, 3.1, about 125k miles.
I've replaced the muffler (with a Flowmaster) and put in K&N intake, other than that just little things, general upkeep.
Did have to get an oil leak fixed when I got the car a year ago, the plug where a distributer would go had come out... leaked about a quart of oil every week or two.
Other than that, I love the car and it's never given me any trouble. It's a good blend of power, reliability, and comfort. Something I can get quick starts out of (0-60 in 9.5 for an old sedan ain't bad) but still take road trips in comfortably.