Mr G, I combed my pictures and found a few more that may show what I did a bit better. I don't have any pics of the details of the cooling baffles. The left and right sides are similar, but are each custom fit to the engine. I used galvanized sheet metal (steel). I believe it is the stuff used for roof flashing. Could have used alum sheet, I suppose. Also, it could probably be refined a bit for better looks.
I tried to get good fit between the baffle parts and the engine, and sealed some areas with black RTV. I don't want any air sneaking out of the top area.
The oil cooler is from Great Plains and came with the engine kit accessories. I don't know if I had to choose it or if it was just part of the package.
It is rigidly mounted below and in the front. I was wary about using hard alum tubing, but nothing is free to move, and so far all is good. I check all connections, etc. every pre-flight. The engine side of the tubing connects to a plate that I made that covers the two ports that normally go to the cooling tower.
There is actually too much cooling capacity. In the summer, with a fully open cooler, the oil temp barely reaches 160 degF. I have been carefully covering more of the cooler and ended up with the whole front being covered, maybe reaching 185 degF. The last time I flew it, air temps were 35-40 degF, and I covered the cooler front and half of the back, and still got only 185 or so. I'm being cautious because I am aware that the oil temp gauge could be off (I did test it with boiling water before installation, so it is probably OK). Another indicator of rather cool oil is that the engine is almost touchable after landing.
I'll attach pics on this and following post.
Hope this helps some.
