Have already been down that road & been in contact with Lindberg-Hawk's owner, Ernie Petit. He advised only that they obtained most of their reference material from USN sources but that's as specific as it gets. Based on they're having to make last minute changes to their tooling - release is postponed another two months - I wouldn't be surprised if they cobbled it together from photos & whatever they could get their hands on. No wonder there aren't any aftermarket guys interested in turning out kits for these beasts.
I tend to agree that their should be drawings available if they haven't been passed back from the National Archives.
Totally forgot about J-aircraft & will spend some time tonight doing some digging.
Thanks gentlemen!
Chuck