Histoire de l'Automobile Belge shows a picture where you can see something that seems to prove the point I made earlier;
I believe that Poelemans of 107 Bredalaan in Merksem, near Antwerp, bought the left stock from the Keller Motors Continental of Brussels.
The Louis Maes Aine (firstborn) coach builders made a woody out of these. These are what the book calls "Pullman station cars" (though I feel this is a misunderstanding again, Pullman and Poelemans have a very similar sound to them)
The picture shows that the woodies are made out from what seems to be a chassis, window frame and a bonnet.