No drama. If going down the DIY route, for back windows I would always start at a corner, saw through until you can see the wire in the car. Pop off a handle and pull the wire through to the inside then saw around with the person inside.
You will need a sharp, long Stanley knife on an angle to scrape the old bond off the glass. Clean the surface with alcohol or something of the sorts.
The fibreglass tailgate needs etching with some wire wool or a high grit sandpaper to give it a key then clean the same. With the bonding kit use the black primer to paint where you are going to glue on the fibreglass. Then run your bead of glue, the standard nozzle they give you should be fine, it only needs to be a thin bead, 5-8mm high if that, if you go any bigger it will just ooze out when you press the glass in place. When doing the bottom section get the glue as close to the lip leading inside the car as possible, if it's too low or will ooze out the bottom of the glass, you will see what I mean when doing it lol! You will have a join or two in your glue bead, either use a spare nozzle or the end of an old pen to join the two piece of bond until you can't see light through the join. If it's sticks dab a bit of alcohol cleaner on your chose 'nibbing in' tool. When you've bonded back in get some tape and tape it in place and leave it for an hour or two to fully cure.
I'll put a link to the stuff we used in the trade, same product but not in trade packaging or volume. I'm sure with a bit of searching you could find a cheaper one.
Just so your prepared tools wise I would use;
- Cheese wire,
- Stanley blade or bond removal chisel,
- Wire wool or high grit sandpaper,
- Alcohol cleaner, or some kits include an 'activator' which is the same stuff,
- Primer and bond.
Hope this helps. Done loads of clio rears before so if you get stuck just drop me a message 👍