I found a link here that gives the mounting depth on door speakers. The dimensions were for an ap1. I have heard that the ap2 has doors that were reshaped to give more arm room. Is the speaker mounting depth different?
http://users.rcn.com/dhintz/Michelle/Audio/audio.html

That or if anyone has aftermarket components in their doors, just tell me what you have because I am sick of trying to figure out which ones fit. You'd be amazed at how few speaker manufactures list the mounting depth of their speakers.

 

I don't believe there's a mounting depth difference between the AP1/AP2,
but I don't know that definitively. That said, I've heard of very few speakers
that won't fit using a 3/4" MDF spacer, usually just very specialized speakers
like the JL 6W0 mini subwoofer. People have installed a great variety of
speakers without problems. Once you narrow your choice down to a
speaker or two, post and I'm sure someone will tell you that they've done
it. Also, if anyone knows of speakers that won't fit despite the efforts of
a reasonably competent installer, why don't you post them here, along
with a description of the issue, eg. magnet diameter, magnet depth, etc.

 

Can you elaborate on the MDF spacer? I might be visualizing this incorrectly. If the speaker is sitting 3/4" above the mounting hole, won't it then be sitting against the door panel? Thanks for the info!!

 

the stock speakers sit in a plastic basket, as pictured on the website
you've already seen. a few speakers will fit in this basket, some more
will fit if you cut away the back of the basket (making it simply roughly
1/2" thick spacer ring), and most will fit if you replace the basket with a
3/4" spacer ring, which you can buy but most people (or shops) make
out of MDF (medium density fiberboard, readily available).
see:
https://www.s2ki.com/forums/index.php?showtopic=269226