On your way to Chemnitz, you will pass Berlin, which is Germanys capital and quite a big city. Anything is available, there.
In case, that you order the parts in advance, there is a repair-shop, where you could get them:
lundtauto. Tel.: +49-30-815 50 22, fax.: +49-30-815 50 66
They are located near to the highway and they do not belong to the Porsche dealers organisation. That means, they usually give fair prices.
I am not a relativ of Mr. Lundt or his advertisement manager, i am just a customer and a friend...
Thomas