GTO rear speakers

[myhsv]

I have successfully, (many thanks to all that replied and helped me out), replaced my front tweeters and subs in the doors via cross overs.
Does anyone know what and how to remove the speakers in the side panels of a GTO and I assume, it is probably the same in a Monaro?
They look as if they would be a 4" and from the sound coming from them, I would guess they have a capacitor attached to allow mid frequency output. Technically, it seems the coupes have a 3 speaker split system.
If i replace these units I assume I would need to keep the capacitor attached as my crossovers are only for two speakers, or, purhcase a 3 split crossover.
Any help would be appreciated.

[semi]

Im not sure how likely it is that you ahve a 3way system, more likely that the 4" are full range, for rear passengers, though im really not sure. Im pretty sure that stonex (or i may be confusing him with someone else) has done a monaro install, so he might be able to help you.