Hello Chris and Sally and welcome back to the Exsis appreciation society.
I remember your search and several postings at the time(think you may have had a VW and came from Gloucestershire?). .
Throughout the intervening years several older and long term owners have sold their vans (Barry included) and several other previously not known about Exsis have come to light (so there are a few more known ones about…..but they are still difficult to get hold of and vans for sale still don’t seem to hang about for long and the SG is still difficult to find.
Best wishes in your search and keep watching.
Fred