Civic Type S vs Type S GT

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Have decided i'm going to purchase the above Civic diesel around late 00's variety (unsure what generation that is, maybe 8?)

Anyway, from what i can tell then differences between the two is that the GT has a glass roof (not bothered about that), and cruse control (AM bothered about that!)?

Does anyone happen to know if it's simple to fit the cruise control to a non-GT?