GS windscreen

[Glennbilly]

Does anybody know where I can get a GS windscreen?

[Stonehopper]

http://www.franzoesische-klassiker-shop ... sungsteile

Not cheap. A visit to French breakers might be more rewarding, though time consuming.

[white exec]

One here:
http://www.monparebrise.com/en/car-fron ... 15088.html

[macplaxton]

Pilkingtons make them new.

http://www.pilkington.com/en-gb/uk/auto ... ls/citroen

Sometimes there is a bit of a wait, but they have the tooling. Even if they didn't have the tooling, they'd make it (for a price).