Changed sparkplugs on the '07 (112k miles), all in good shape, tan to light brown, electrodes not deteriorated. Replaced with NGK IX Iridium, kit 3764/BKR6EIX-11.
Came out easy, had to use a 4" extension for the driverside rear two, had to remove a cable bracket to get the driverside rear out. Ended up using a 10", 6" and 4" extensions. Installed with antiseize and dielectric.
Re-installed the overhead cargo net on the '07. Just an OEM spider net meant for the floor area moved to the roof, PT347-89030. Weave bungees through the mesh, anchor one end of the bungees on the passenger grab handles. Anchor the other end of the bungees by removing the rear grocery hooks, reuse the bolts with a large washer. I used six bungees, two front to back, two side to side, and two crisscross. Holds a lot of gear.