also zeintop back under a new name (but doing business about as well as he did in the past); youo might need a facebook account to view:
https://www.facebook.com/pages/Z-ART-automotive/124875237552630
and this guy (peter hansel):
http://www.boxtcars.com/
who makes a cayman-style race top for the boxster. google 'boxt cars' for images of it (vendor website is blocked for some reason).