I saw a 04 Grand Prix at 240k with original struts, ball joints, and one tie rod end was original but slightly loose. All highway I'm sure but still impressive. Didn't check the sway bar. Vacuum leaks seem more common on supercharged cars. Sway bar and links, LCA hockey puck bushings, and hubs are the earliest to go though. At least in the salt belt states. My LCA bushings went bad at 115k, but really the collar that the bushing is made with rusted apart and separated.