If you're prepared to wait a little, try Wolfsburg West in California.
www.wolfsburgwest.com
I've got a set of their carpets for my Oval, and I'm really pleased with them. I also bought the entire rest of the interior for the car from them, and found them to to be very helpful and quite prompt in getting the stuff over to Scotland.
Karmann Konnection might still be an agent for them here in the UK, so it might be worth your while making some enquiries there.
Gavin.