New owner introduction with back window question

[KellyC]

Here's a glass top version on eBay for $575. The strange thing is that it does not come with a headliner. Is that common? How much work is it to swap in my headliner from my existing top? And would it even work to put a headiner from a plastic window top into a glass window top? The window itself is smaller, so I am guessing not...

http://cgi.ebay.com/ebaymotors/Porsche-Boxster-97-1997-2002-02-Convertible-Top-W-Glass-/250731090948?pt=Motors_Car_Truck_Parts_Accessories&fits=Make%3APorsche%7CModel%3ABoxster%7CYear%3A200 2&hash=item3a60bcd404