Electric or mechanical water pump/ electic pump questions

A 50 gallon Meziere electric pump will have fittings for you to mount a sender..It's nice to be able to run your w/p and fan after a run to cool down the engine.. Get as big a radiator as the car will hold and as big a fan as you can fit. I'm sure there's a T stat housing available with a tap. My wp has places for fittings on both ends.

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Does the pump need to be running for the sensors to read?

When you say your wp has places for fitting both sides are you referring to me needing to run 2 sensors?

I've been looking for ages and unable to find to find a top that an and will accommodate a t-stat that why I was asking if it OK to run with out one.