See thread on 911 board:
http://forums.pelicanparts.com/showthread.php?threadid=126824&perpage=20&pagenumber=1
I'm actually surprised. About half of the 911 owners call them a *Porsh* and aren't apologizing for it. But those that call it a Porsha are really sticking to their guns.
Now, I know I'd feel a little goofy if I said, "Wanna see my 'Porsha' race car?" And opened up the garage door to reveal my 914 race car. The best I usually get is, "Oh, I REMEMBER those." (sigh) So, which one of my cars is a 'Porsha?'
Answer: I have Porsches (plural). You guys like Porsches? I know some people that own Porcshes. Porsches are cool. Use the plural form and you'll always be spot on whether talking to Hans or Dieter or Bubba or Tom down the street.