I think he means 3dr cosworth lads - if thats the case they are bonded in - the only way to get them out is with cheese wire or a very long thin blade.

Start inside the car and slice through the mastic, running the blade parallel with the glass but be careful as if you touch the glass you will scratch through the black out edging which runs around the glass and it will show up from outside.

This way the window comes out with the plastic edge strip still attached to it.

My new glass and trims came from Ford Germany as they were nla in the uk.