It's not as easy as that, as you'll see when you open the hood. The cowl area is right there, which extends well into the engine compartment. More accurately, the hood hinges back well into the passenger compartment, over your feet and the lower part of the windshield is still above the hood line.
So no, unless someone comes up with a clever cable arrangement there is not likely going to be one under the hood. I suppose it could be recessed into the cowl, plus a bump for the hood, but the angle of the dangle pretty much means that anything you make will probably interfere with the operation of the hood itself.
I've actually day-dreamed of having the hood hinge farther forward, near the leading edge of the cowl, rather than the trailing edge.
No matter what angle you look at it from though, some major or minor body work is involved.
I forwarded your interest, and another mention of it in another forum to see if we can get the ball rolling again on making the Viewfinder, or it's mate.
I've always maintained it should be out of mild steel instead of stainless. Just to keep costs down, which should allow sales to go up!
Back in the seventies and eighties, stainless windshield frames were the rage. Because so many originals were already rusting out, it seemed a natural progression to some. Me personally, I feel that regular steel with either a galvanizing or e-coating would last forever too and be much less of a hassle to make and at least somewhat less expensive to sell.
After all, how many Broncos are really going to be left out to be buried in the snow, or baking in the hot desert sun, or rusting away on the side of a beach house.
Ok, well that last one might still be going on, but the other scenarios started declining as Bronco prices started climbing.
So regular steel gets my vote.
Add a couple of extra cleverly located drain holes, some protective treatment, and away you go.
Paul