1994 Volvo 960 Wagon (speaker Size), 1994 Volvo 960 Wagon (speaker size) Options

[ruffnitupcrue]

First of all I am new here so please excuse me if this has already been covered, I looked but may have over-looked it over...

I almost feel like an **** for asking this but, I have had quite a bit of difficult finding a source of usable information. I have been looking for some info on what size speakers are actually in my car. It seems like every site has said something different. (Don't believe me, please look for yourself.)

I do have a wagon, so the 6x9's in the back so frequently mentioned aren't an option even in my car.
I'm looking for the size of the front door speakers. (while the back seem to be 5 1/4's) The fronts seem to be slightly bigger and the bolt pattern is different.

I'd like to know the front door sizes (as well as back door if possible) and will I need to get an adapter because of the strange bolt pattern?