Looking for original sound insulation

["Vito Pacione" <vito@argohouston.com>]

I am trying to find a match for the original sound insulation material used in
TR6s. It was the tar like material that was put into the interior tub and the
door skins. It's really pretty cheesy, but I'm trying to do an original
restoration so I'd like to try to find some of it that had the original
honeycomb pattern to it.

Thanks!