great thread and i very much appreciate your help!!!@TheNeek got his front door speaker adapter rings to me this week, so I was able to swap in four new speakers.
With the rings here, I removed the panel and OEM speakers (yep...still worked, too), lowered the window, then measured the clearance with the ring. I then went shopping on line. The replacement 2-din AV head I put in a few years back is made by Boss. Coincidentally, the 5.25" replacement door speakers I found with enough depth clearance are Boss. They are 1.8" deep. That is too close for comfort, BUT...TheNeek's ring adds enough clearance. Boss CH5530.
These speakers are ridiculously inexpensive! I feared they would sound like crap. To my surprise they sound quite good, and spectacularly so compared to the OEM. They also provide deeper response than I expected. They can give a bit of thump where you like it.
For the back speakers I wanted a bit heftier speakers, and went with JBL GTO629 6.5" speakers. I removed the OEM grille structure (in pieces), removed the panels, removed the OEM hard mounts behind the panels. From there, it's pretty much straight-forward attaching them to the panel.
TheNeek has thought out his rings well. The small mounting hardware slips right into the countersinks...which ensure a flush fit to the panel.
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