Replaced both rear sway bar end links. These were longer pieces (from an '03 Protege5) I put in to take care of the bigger rear sway moving around when I jacked it up. The old ones were corroded and the nuts kept loosening up. I got the right one off without much trouble (it was very loose), the left one put up a fight but I beat it into submission. I had some Mazda flanged nuts lying around that I used in place of the Nyloc nuts included with the new end links, hopefully they won't loose like the Nylocs.