Get a GT3 or a cabriolet with a hardtop. Yep, the standard coupes all came with sunroofs, unfortunately. Apparently, Porsche did not want to spend the money to federalize a non-sunroof coupe, so they could not even be ordered without a sunroof. Even the targa had a sunroof!
If you are looking for a 996–one of the best performance car bargains on the planet right now–here’s a juicy listing: