A guy in the local wally club, also in NewEngland, has a mid-70's Argosy with those bunks. He said I could have 'em.
The mounts are different than what was originally installed in my AS. I saw one mounted in a 60's vintage trailer at a rally last year, and realized that there must have been one in mine at one time, too. There is a circular pattern of holes in my ceiling in the same spots, filled in w/ pop-rivets. I had wondered what those were. I'm hoping that the rectangular mounts pictured will work. It'll be perfect for when my boy gets a little older. For now, I've removed one of the mattresses, and we put his playpen up on the platform. fits perfectly. but I have to sleep on the pull-out gaucho up front.