No, it's not an additional Boxster . It's a recent (at least it wasn't there last autumn) addition to the GT3 option list. It's a no cost option for the Clubsport and the description is "Leather interior for Clubsport, Nomex seats".

I'm looking for a more detailed description on what this option really is. I've asked my dealer but nothing so far. Does anyone here know?

Thanks, Anders