Hey guys, i need some help with constructing baffling to cool the engine in a 33% Extra with a ZDZ-100 in it. I've been flying 50 size planes, so I never had to build any. I get the general idea behind it that you want to force the air through the fins, but would still appreciate any help or some pics. Tis particual cowl is a two piece that splits about 1" above the thrust line. My general questions are what is the best material to use, how do you attach it to the cowl, and how far back over the engine do you go?

Thanks

Mike