Your best bet is likely a your local Porsche dealer. It appears you're in LA, so you have a handful of options to choose from. Pelican also sells it - make sure you buy the "Porsche" branded one. It will have "OEM" in the SKU. Might have to shop around to get the best deal.
I ended up getting mine from my local Porsche dealer seeing as 1. I'm up North 2. Shipping would have cost me dearly 3. The exchange rate would have cost me near double
