Your in luck John.
I have a set. I installed adjustable upper arms on my Special when I did the LS/4L60E mod, they have been packed away in a box since.
They do have some scratches and could use a coat of paint. The bushings are new, having about 50 miles on them. I tried them with some test drives but needed the adjustables to achieve the correct drive angle.
I tossed them in the mail today, you should see them mid week.