Assmbly questions

I am assembling my 1959 XK150. I got it in a box, actually a bunch of Rubbermaid boxes. I want to install the new demister ducts at the cowl. I cannot find any photos of these parts in place. Can someone direct me to more information on this subject ?

Are these the ones you have in mind?

The later ones were square box like…


Thank you. this will help.
If nothing else comes in I am going to do a temporary install of the dash top and line up the demister ducts and fabricate brackets to secure them. I am going to take photos and post.