I have recently bought a set of baffles for my RV8 with an IO 360. I have the RV drawings which I could get copied for you. I have to say, the RV baffles are very poor and need extensive trimming, very time consuming!
I have the OP drawing, even with that the baffle kit is like a jigsaw puzzle. I think I have mostly figured out. Now I just have to adapt it to the showplanes cowl...