I used those baffles on my 93" Zero with a FG 84. Tough to get them just right. Love this idea. Very tight to engine. I believe some Full Scale planes have their baffles attached directly to the engine. Like it.
BUT, those baffles were developed by Keleo and a man named Ray English...the Saito Master. He wants the baffles slightly behind the center of the cylinder not in front. I think around 1" back from where you have them.
As Ray explained, he wants more air to hit the front of the engine before being forced through the baffles and around the fins and heat sinks. (his actual reasoning took several minutes to explain)
He would also say a dummy engine with holes cut out is not baffling.
On my Zero, cooling was even better when I moved them further back...but not too far back...right around the piston center line.
Your idea is a real good one. Can it be modified?
best,
jim