Two 3/4" cross members were welded to the top of the 2x1, and a piece of angle with a hole pattern for the AM SS was welded on top of that.
What you said in the other post made sense, but this makes it much clearer. Thanks a lot!
I have always envisioned a system like this. But I was always adverse to adding so much support to the chassis to get it to work. However it does not seem like it made much of a difference in weight, but instead saved a lot of time on your drive train. Good job!