Not a big fan of that top. I prefer my original top to the Zeintop, especially for that pricetag. But, there is one out there, I forgot who posted it a while ago---where the back window looked much better proportionately--- the pricetag for either of the new hardtops are still a bit ridiculous though IMHO.
EDIT: Here it is:
http://www.stuttgart.co.uk/986hardtop/boxht2.html
Porschekid and 986spyder posted it previously.