My friend is a traditional guy and he is likes open cockpits. I am thinking that the plans will only show a windshield. Over the years I think I remember seeing 3 or more versions on his. His latest one is very cool, it wraps around the sides of the cockpit quite a ways. He says that there is very little wind when flying.
The Tempete was his first homebuilt he finished about 1974. Then he built a 5151 Mustang, Rans S-7, and a Murphy Biplane. And he tried various engines on those planes. The Tempete still has the original cont. on it. The 5151 is sold but he says a good day for him is when he flys all three planes.
As an experimental, you can of course put on whatever you want. I have never talked to this guy but you could contact Todd's Canopies and see if he knows what would work.
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Wally