Wilton Whool carpet

[STELLWAG P]

Dear Colleges.
I am on the way for a new set of carpets for my 400.
As I have seen on some other cars, the Wilton whool carpet is the one to have.

So, I would like to ask you, where I can order that Wilton carpet, please?

And second, does anyone know, how much of material (in Inches or meters) is needed for a set, for the 400?

I thank you very much for your help.

Very best regards

Peter