Hi Rob
Try getting in touch with one of the owners of Bradshaw Fuels. Last year my uncle borrowed their antique fuel truck for a display at Ancaster Fair. I went with him to return return it to his shop and he showed me around the garage(my carrier and his truck have same hind of flathead). It was basically a museum of rebuilt vintage gas pumps and other fuel industry stuff.
I don't know if they coudl help you out out it is worth a shot.
Here is a link to their website.
http://www.bradshawfuels.com/index.htm