Hello folks. I've done a bit off research into modified t25 origins and see the westy is a German creation,Devon from south England but I've a Viking xplorer cera 1980 and I'm wondering off its modification origins.
There are three or four pages on Viking conversions in David Eccles' excellent book, VW Camper - The Inside Story. According to him, Viking campers were first launched in 1970 (using Bay window busses), produced by Motorhomes of Berkhamstead, in Hertfordshire. In 1973, they changed their name to Motorhomes International, and moved to Stanbridge in Bedfordshire. In their early years, they got embroiled in a bit of a slanging match with both VW and the Devon conversion company, with Devon claiming only approved conversions were safe (i.e.. theirs and Westfalia's). This didn't seem to hamper Viking's sales much, and they continued production, later launching the well known Spacemaker - the roof that folds out to form a three-man bed. There is also an interesting point that the company would fit the roof to an existing camper - which explains why some Devon Bay conversions actually have Viking roofs.
Most of the text in the book is regarding the various interior options that were available to Bays, and all the book has to say about T25s is this.... "The Viking conversion continued to be offered on the T25 range, but stiff competition and dwindling sales forced Viking to cease operation by the mid-1980s".
1990 2.1 DJ Syncro Caravelle/Westfalia conversion RHD