I see now,David.
I'm afraid the fan configuration pictured can not generate the sort of movement needed to be seriously effective...
Sort of the same same with the location of the external oil coolers I'm told...If you want them to perform near the capacity of what's going on in the dog house, I'm told you need to perch them out in the wind at say,speeds of 600+MPH to rival the air force going on in the old tried and true set ups.
Cute set up though, probably a dune buggy application where the ass-end of the vehicle is all open