Glad to hear the aftermarket glass top is working for you!
When my plastic window breaks I will be installing the same type of replacement top. I wonder if you could post a picture of what the view out the smaller window is like? I'm curious how much worse the rear visibility is?
To clarify some of the top confusion in this thread, here is some info:
When Porsche redesigned the top with a glass window in '03-'04 they added an extra bow (4 bows) to accommodate the glass window design. The previous top '97-'02 only had 3 bows. The '03-'04 top and frame can be retrofitted on '00-'02 Boxsters as a direct bolt on replacement. The '03-'04 top and frame can also be bolted on to '97-'99 Boxsters but the top transmission and cables must also be replaced. The top transmission and cable retrofit can get complicated which is why these aftermarket glass window tops are a great option for '97-'99 Boxsters. Plus, finding a top with a frame is difficult and expensive, especially if your top is in an uncommon color.