Thanks I was wondering if just those covers could be popped out somehow. It would certainly make for a smaller job.
Thanks again, I'll look into giving this a try. If it feels like something is going to break I'll pull back and take the long route. Either way I win, my rear (bench) seatback needs to be removed for repair anyway, my brother did a heck of a number on it kicking through it to get in the car as the door locks weren't working for him at that time. Put it this way, I'm really glad my wife is a skilled seamstress, good with a curved needle. The latch for the passengers side fold-down is stuck and rattles when the car is moving and the 2 seams above the arm rest are torn away.
I'm looking for a decent set of low profile 6 x 9's co-axial to place in here, this car (thankfully) has the Extended Range 6 speaker set-up (I'm the original owner & I still have the window sticker) so it's got 4 OHM speakers. The number stamped on them is 16189861 and they have a 100W rating. Not bad for factory. Having 4 OHM though, that's a plus, it opens up what I can buy. I need a lower profile speaker as I have that RSTB installed which does get fairly close to the trunk ceiling.