Buying audio for 2013 sedan G3

[sparkofd]

Hi guys, i want to replace my dad's car speakers.
The car has 4 speakers, 2 in front doors and 2 more in the back, behind the passengers headseat.
Im pretty sure the back speakers are 6
5" so I will put JL c2 650 in there.
The problem is that im not so sure about the front door speakers measures. I Think they are 4" but I need to know the depth into tje door.
Maybe you guys could help me out?

Edit: Im not planning on doing any modification, and these are the speakers I would like to put in there Jl Audio C2-400x 4-Inch 2 Way Speakers. I think they are too big in depth but im not sure.
Thanks in advance!

Edit2: It's the manual windowed version (in case ot affects depth somehow...)