Go to Geezergassers.com,plenty of pictures of 40s and 41s there.
Also you might contact Bob Worrall...cobrabobmo@hotmail.com He is a St.louis,Mo. member of that group.Although he owns an Anglia he can put you in contact with Bob Mitchell who owns a 40 coupe and a 40 pickup or Tom Cray who owns a 40 coupe. I'm sure that Bob Mitchell could tune you up on your questions.