And since this is the thread that brought me here. Here is this.
http://www.advanceadapters.com/products/50-8506-adapter-to-replace-gm-700r4-with-gm-2wd-th350/
I'll get some more pics of the 85 when I get hom ot is in the garage buried. The 91 Burban on the other hand was bought as parts but ran so good I kept it together.
It ain't much to look at but it does what I need it to.