Rear strut brace question

[threpwood]

This picture below was posted by mjw930 and I added some circles to mark the items in questions.

About the items in red circle:
Anybody could direct me how to remove the clips? I didn't see any screw etc and the back of the insulation is glued.

About the items in green circles:
Anybody know what kind of screw/nut noted in the circle? It is a flat screw/nut made of plastic and used to hold down the insulation. I was using an electric screwdriver and accidentally break one of these (flatten the top)

[mjw930]

The clips marked in red are fairly easy to remove. Pop the cables and wire out of them then simply unscrew them. They screw into a bolt that's welded onto the rear firewall. To re-install them you must guide the lower clip portion over the strut while holding the center part square relative to the bolt. Don't overtighten them becuase the plastic will strip.

The caps marked in green are again only plasic covers that screw into a bolt welded to the shock tower. They can be tight but I found that using your hand to apply a twisting pressure to the outside of the cap exerts more force than a screwdriver in the plastic slot. I wouldn't worry if you strip or break either of these plastic parts, they aren't very expensive to replace.