take the battery out and make sure the battery tray and surrounding area has not been corroded by acid. clean/paint as necessary.

check center bearing on drive shaft for wear. also universal joint on drive shaft. Check rubber "flex" discs on each end of shaft.

check engine mounts and shocks. check rear end mount. new ones reduce vibration.

pull window switches out of console and clean with radio shack tuner cleaner.

clean and lubricate sunroof guides.

replace old lines to window washers and the "in hood" spray units too if they don't make a nice pattern. cheap and easy.

look for small cracks around window rubber trim and fill with clear silicone to reduce wind noise.

replace the stock speakers. stock ones are really bad.

clean and lubricate the antenna.

look for cracks in the air cleaner mounting bracket (under air cleaner). While in that area, look at the oil return line under air cleaner housing and if it is oily, replace the "o" ring on the tube that extends from the bottom of the air cleaner.

good luck with your new car.

Nic