No mods - plain vanilla Crossfire coupe purchased July 2003. Tune ups include transmission and brake fluid change too. I'm no mechanic so all my work has been through my neighborhood Chrysler dealer - they know me and they too have a hard time believing the car is near 300K. My coupe is my year round car and I drive it all winter, so my convertible is spoiled and gets a break in winter. I had some trouble with the back hatch latch but the dealer finally got that fixed.