Jon,
Thanks for the detective work. I dug out the old pictures and our stripes & logo match those of the 1987 you have pictured several posts up. When I said it had bunks, that was just how we left it set up, but what we really had was a pull out lounge with a fold down cabinet bunk above. Where the wall of the model pictured above is a full wall, ours was cut out so you could see around to the door. I believe we bought this little gem in the very early spring of 1987 or even the fall of 1986. So, if it's a 1987, as I suspect, it would be a 1650. I'd like to add all our Sunlines to my signature once we figure it out. Then in spring of 1991 we have pictures of our bunkhouse, which based on your post I looked up the brochure and it was indeed a 2364.