Thanks, David, for those explanations! Incidentally, (sorry to digress for a moment) do you have any data on the Daganham staff car, the WOA1 (W0A1)? I've read it was built from 1941-1944, taking over from the civilian V8-62 model, but my production documents don't list it separately anywhere. It must be lumped in the Dagenham totals.
Here are scans of two pages relating to the G8T from Tim O'Callaghan's book
Ford in the Service of America. Sorry about the slightly blurred inner-margin text. The book has a glue-only binding, and I didn't want to crack it by pressing the book too hard on the scanner glass.
http://www.mediafire.com/imgbnc.php/...4c7f70f76g.jpg
http://www.mediafire.com/imgbnc.php/...e98aa7886g.jpg