Here is the other side (Passenger side)
Inserting a 6.5" speaker in the original 5.25" location...
1) Follow the same two steps has stated in the post above. ( you know center the magnet in the 5.25" hole, draw circle using template and cut out using a dremel).
2) Attach the speaker directly to speaker panel ( note that the screws are too long and will hit the metal of the car when you install it.
3) Cut the screws short so they dont hit the cars metal. I cut after I installed the speaker, just make sure the sparks dont hit the speaker.
4) Now you need to cut that top panel to clear the large speaker.
5) And finally your done:
Things to watch out for , Take extra time to make sure that you have centerd the speaker in the 5.25" hole before you start tracing and cutting. I was off by an 1/8" and it was really hard to fit the panel back on. Have Fun!!