7/16" Left Hand Lug Stud

It might be a long shot, but Im looking for a 7/16" Left Hand Thread Lug stud for a 10" front brake drum for my 68 Dart.
I know I can change them all to Right Hand but I would prefer to keep the car original.
Any help would be appreciated in tracking one down.
Will look at a complete left hand drum/hub assembly if I cant find a stud. Thanks.