Thanks for the help and info. I decided to install it in the water pump port since the alternator bracket/tension arm is directly in front of the block location and there isn't much space. I couldn't install/remove the sensor wire connector without removing the alternator bracket/tension arm. Since the coolant is being sucked from the same cavity in the block into the pump past the second sensor, my guess is that there will be little if any temp difference. You seemed to confirm that noting that the temp gauge reading was the same with the swapped location.
Again - thanks for the help.
Norm
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