that just shows a link to crutchfield. As I mentioned in my post when you put in a 2013 Durango on crutchfield it asks if you have the alpine or non alpine system. When I put non-alpine it showed my speaker sizes of 5 1/4'', 6 1/2 and 6x9. It makes no mention whether they are coax 2 way, 3 way and there's only 2 speakers in the front and rear for the non alpine setup so they can't be 5 1/4'', 6 1/2'' and 6x9.
I've read people swap out there speakers here and figured at least one of those people would chime in and post what the correct sizes were...I guess not. LOL I'm guessing 6x9 and 6 1/2 are the correct sizes. Probably the 6x9's in the rear and 6 1/2's in the front. I'll get the panels off and find out myself I guess.