Speaker placement

[andyj]

Hello,
I'm looking at buying either a base 2013 or a Touring with the 8 speaker Bose.
If i get the base model, I'll upgrade the head unit and speakers. My question is, regarding the base model with only 4 speakers, are the interior panels of both models the same, that is, do they have the speaker locations already molded into them to accomodate 8 speakers, or will you have to cut holes in the interior panels of the base model to add more speakers to the 4 speaker factory set up? Thanks in advance for your help.