Ah thank you for finding this image! This is the first time I've seen what it looks like behind the cover.
So the bolts are related to removing the whole end piece, that makes sense, so I don't need to worry about those.
Boosting the levels a bit to see more detail:
Looks like there's plenty of glue around the edge, and maybe those two square pads are also sticky.
And I've marked all the holes which might be for clips... could be a nightmare!
Did you find this in a thread on here? Would be grateful if you could link me, maybe then I can ask the guy how he did it.