Those are the JBL's from Dirtstiff's speaker thread. Yes.. I had to mod them to get them to fit. They have fuller, deeper sound than the OEM speakers.
Hopefully no spare parts. But I did find a grommet that fell into the dark interior long ago... and was replaced. So now I have a spare grommet.
I did carefully catalogue and arrange all of the parts; to prevent confusion upon reassembly. From the last picture I posted, you can see a cardboard screw holder in the background, that will help me reorient the screws. A helpful hint gleaned from others on this board.