Other interesting tidbits.
Daimler-Chrysler owned 100% of Westfalia when our Westies were made. They may have special designations for various converters.
Z29 Westfalia Camper Specs, NAFTA
Skylight was listed.
DK1 James Cook Power Tilting
Also some mention of "velour" at SV0 Velour for James Cook, but I don't see any velour.
This one specified the spare tire and spare tire carrier. Early Westies were sent to Jacksonville, Florida, with a spare tire carrier and tire which were then removed by Airstream. Later Westies came without the spare tire being shipped to Florida.
Also liked the reference to deletion of roof.