What the heck size speakers ARE in the doors?

[Head_Unit]

2017 Alltrack. Crutchfield shows both 5" and 6" component sets saying they will fit the door...er if the stock are 5" it seems unlikely to fit something larger.

 

[golfdave]

6.5" from what I can find...& having had mine out they are definitely not as small as 5"....