Thanks for your response.  I understand the concept of every little bit
being a help when it comes to venting heat.  But it seems to me that the
puddles under each air scoop might also have a negative impact on the
overall longevity of the body,  i.e. eventually rusting-out where the
vertical and horizontal meet.
Water + Air + Ferrous Metal = Ferrous Oxide (Rust)
Water + Air + Ferrous Metal + Warmer  Temperature = Even More Faster
Accumulating Rust
It might be interesting to rig a thermometer so that it could be moved to
different engine compartment locations, w/ a dashboard area temperature
gauge.  Block off the air scoops and see what the temp reads.  Do the same
thing w/ the air scoops unblocked and see what the temp reads.  The best
solution, however, might be a small shield type hood preventing the
rainwater from entering yet permitting the warm air to ascend and vent.   I
wonder how to determine the correct shape such a curved shielded devise
might be?  Hmmmm.  By the way, I doubt the engine compartment temperature
would ever exceed the coolant temperature.  Do you really think it might?

Cheers,

Dave Gunning