I took the car in because I couldn't get the screws to match up with the screw holes in the car frame.
1. Place the Infinity in the hole.
2. Use pencil to make mark, through the frame hole on underside, on the speaker frame.
3. Use good drill to slowly create new mounting hole in speaker.
4. Mount.
Unless Toyota is giving you a decent brand of speaker, go with the Infinity. Not sure about nowadays, but Infinity used to make a fantastic car speaker.
If I had to choose to buy a new speaker, I'd go with MB Quart or Boston Acoustics... For now, I'll stick with my free JBLs...
Terry