Probably a long shot but would anybody out there have one they would sell or know where a fella could find a detachable vestibule for my older style 8 man alaskan guide tent? The newer ones are all integrated. From what I understand they used to be available through cabelas but now they no longer offer them. I think they are called a deluxe vestibule or detachable vestibule and they attach by a zipper on to the tent. Thank You for any help in finding one