I'm surprised a T&C has disc brakes, I thought they were Imperial only??
See if you can find an old auto parts store with an old bald headed or gray haired parts man. Take one of the hoses, he may be able to match it up in one of his old parts books.
If you have a part number it should be possible to get the hose. It is surprising what is available in the way of brake parts, from Wagner.