How do people get their arm through that hole? I have been trying to reach the front bolt and the rods and my arm doesn't even come close to getting up there. Is it possible to take that whole black panel off?
You have to pick your poison on this mod. The black inner panel can come off but requires basically removing the windows out of the track and holder.
I got no magic pill for you on this other than when I did it, found it to be a colossal pain even after drilling the "holes". Just have to find the mojo and tool combination that can get the bolts off. A slim head ratchet and a ratcheting wrench can do wonders here.
Last bit of advice if you drop a bolt. Take the speaker out to get better access to the bottom seam. Magnetic pickup tool and inspection mirror comes in handy here.
Hindsight being 20/20, I would have skipped this mod had I know the trouble it was.