Buy new steel reproductions. Cheaper and way less work. You're going to have to cut them up, modify and reweld the body flange anyway. Ford never made huckster A bodies so there is no such thing as a standard 'huckster' fender.
I don't know if this will be of any help in your huckster project but here is a link to my dropbox album of a restoration I did years ago of an original steel skinned 1928 Huckster with lot of fully dimensioned drawings and photos.