Just wondering if anyone has installed or had professionally installed and
pop-up aftermarket sunroof in a non-pop-top?

There are 9 of these:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=150293664433

on ebay right now.  At 79 dollars they're MUCH cheaper than the others I've
seen.  When you cut a very permanent hole in the roof of your van, I suppose
you might not want the cheapest thing out there.  :)

Brendan