James - not sure which year it was changed, but if you have the regular plastic clip to the rear and a metal retainer on the front; then you'll need one of the a/c or fuel fitting release tools. Best one I found was the scissor type at the local PepBoys. You need to remove the safety clamp with a screw driver and slide the release tool into the front fitting to be able to open the locking circlip. Once you've pushed the closed tool all the way in, the filter should release. In an emergency, I just split a small length (say 1") piece of 3/8" pipe down it's length; snapped it over the filter stem and slid it into position to spread the fangs of that retaining circlip. Don't forget to release the fuel pressure by popping the red button on the initia switch in the trunk (or disconnect the harness, whichever is easier); then crank the engine a couple of times until it won't start.
Jim.