The rears are 6X9, and the fronts are about 4X6s (may be 2X4).
The only way you can put 12" subs is to empty the spare well, and the storage in the rear, or put them in the 3rd row foot well.
You may be able to stuff a 4X4 in the front doors, if you make special mounts, and clearance the doors.
The 6X9s in the back sit in too shallow of a spot for larger speakers.