I am still having issues with trying to ascertain if my side windows are factory fitted or not as my 300tdi 90 was originally a hard top and not a CSW, but was modified a couple of years after production. The issue I have is, I want to but some internal window surrounds but I don't have any accurate measurements of the windows (height and width to outside edge of rubbers) and also the distance from the front outside edge of the rubber seal to say the front seat belt bolt hole. If anyone can provide those measurements from an original CSW I would be so pleased. No company seems to want to help me and if they do they just get it all wrong!! £300 is a lot of money to spend on something I may not be able to return.