I don't think you will have speakers in ur dash unless you have the premium 7 spkr deal. so i'ts probably 6x9 and 6.5

 

i puuled the rear panels off todsay, took out the speakersand put in a pair of 4x6 kenwoods (minimal fitting).i measured the speakers because they looked a little small. they measured in at 5 and 9/16" wonder why mine are 5 and a halves and you others have 6and a halves??? curious...

 

i have 6x9 alpines in front and6.5 in back
the opening is smaller than the speaker size because only the magnet part really goes all the way in not the speaker face.

 

Ya mine came stockwith 6x9s for the front doors and 5 1/4 inch speakers for the back doors. And that was the premium infinity sound system that sounded like crap. So I replaced everything with Alpine and put in 6 1/2 inch Type R speakers in the back instead ofstaying with thestock 5 1/4 size that it came with. Talk about a majorimprovement in sound.

 

I knew I wasnts crazy.