The screens are definately different sizes, I don`t know if the mk1 and mk2 screens are different. The 200sx I have is the facelift model and my s12 is a mk1, I`ve got the two cars side by side in my Unit.
It is possible that Autoglass have the wrong codes or that the screens from mk1 and mk2 s12`s are different, as well as the screen sizes from pre and post facelift 200`s. Hope that makes sense...LOL....

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Regards,
Ian.