I tried quick reply so lets try this.
I want to let you know the second drawing shows the angle iron piece turned 180deg from how it should be, the picture shows it as it was intended to be, it will work either way I just wanted to clarify if anyone noticed the pic and drawing are not the same.
Also a split piece of vac. tube on the contact point will protect your paint.
I hope someone gets use of this set-up as it is very ridge and holds tight.