Just wanted to introduce myself since I've already learned a lot from this site. I bought a 2005 Silver-grey over gray 6-speed sedan this summer. It has 135,000 miles and has had many of the common issues addressed already (VANOs, DISA valve, etc).
I just replaced the front control arms, including the rear bushings, and cannot believe how much that improved the steering and front end stability. The rear bushings were definitely shot.
Still working on figuring out how to post photos from Google Photos.