Here is an OSH picture of Jim Rahm's(s?) acute angle radiator mounting.
He uses electric fans running during climb out. The front rads
are intercoolers for the V8 turbo. I am beginning to see more and
more liquid cooled AC engines using this layout at air shows. 
There was an Orenda V8 powered duster with the rads horizontally mounted
under the engine also. A picture later. 

Paul Lamar
 
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