We have a 1970 caravanner and I'm going to try and upload some photos I took this weekend. The first couple of photos are of the front seat and the last are of the street side.
I believe this is all original and I'm planning on changing the layout soon because our kids are getting bigger and I want the front gaucho to be able to open into a more full size bed. The way they are set up now, the front gaucho pulls out only about 6 inches and then hits the side gaucho which is almost a full size when open.
Ours also have independent cushions and I don't think this set up works well. I just saw some at a rally this weekend that utilize a piano hinge and a more futon-ish type of cushion. It would probably make it easier to operate.
Let me know if you have any questions, hope these help. The caravanner is a fun layout and is somewhat rare, which I'm sure you've already found. Glad you're out there!