It's a DA 100.
I have the Venoms at the rear of the cylinders near the spark plug.
I'm pulling my hair out trying different things, but can't get them any lower.

The plane is a QQ Yak 102.
I built some duct work for the front of the engine, and made some louvers for the bottom where the big square is.
You can see my cowl in post #92.

I'm trying the split floor now.
I just don't know what I'm doing, and it's frustrating.

Can I have front duct work, bottom louvers, and horizontal wood to split the cowl?

So many questions...