Gotta say - best $20 you can spend for your Z. For me, it made a noticeable difference.
I had budgeted about 30 minutes for the install based on some of the helpful pics/postings here, but it turned out to be a little more of a PITA than I expected. Pin wouldn't reinsert cleanly after I removed it. A little finesse vs. force ended up working, and I couldn't be happier with the result. Highly recommended mod!