For your '83? Now I forget which year they changed size but I have some on a late 70's parts truck for $25 + shipping (hinges/pivots and the arms that hold it level) for both sides. I would also be interested in trading for something I need... Better go look thru your for sale posts again.
I believe the 70's used a smaller diameter pivot than later on in the 80's. Just cant remember what year they switched /forums/images/graemlins/doah.gif