They might be more efficient Jeff but those things look UGLY, I believe thats why the fan shroud was originally invented, to hide those things!!! The innovations in electric water pumps is astounding, I want to run 30 to 40 degrees cooler with the electric pump and an electric fan, and it looks COOL TOO! Then there is the four core aluminum radiators too! Also running a separate trans cooling system will drop the engine temp a bit. And every bit helps keep the engine from overheating in traffic.
Rat Rods Rule!