I thought this pump would be for street cars, and since it is electric, it would be running probably 1/10th of the time of a belt-driven one, and so should last at LEAST as long as a stock one. I've read a thread a couple of months ago where the majority of contributors were saying that it breaks easily/frequently/quickly, and so though it must be pretty crap, or only intended to be run about 1/100th or less of what a street car would run.
Ah hell, I guess I'll try it (when I get to that stage) and if it craps out I'll shut the car down, get it towed and put the stock pump back in. I've had a feeling that these pumps shouldn't be as bad as I've been hearing (this feeling I showed in a previous post asking someone to tell me it ain't so).
As to the thermostat issue, I see a couple of people have read or heard that you should leave it in, and with the same reason, so I guess it must help, but I'm still sceptical of that, because while with higher flow the water would drop in temperature less, there would be more volume of water passing the engine, taking heat away. Also, because hotter water cools faster than less hot water, it would be better because the hot water would be hotter as it didn't get much of a chance to cool before it was sent to pick up more heat.
We experimented with this in physics (in high school. It's just hot water) and put water in a cup with a thermometre, the cup was styrefoam. 100*C water dropped 5*C or so in two minutes, whereas 60* water dropped 3* in two minutes, and 45* water dropped 1* in 2 minutes. This was ages ago, but I remember that hotter water definitely cooled faster than cooler water, it has to do with the difference in its temp and the ambient temp. Anyways, I still don't think the thermostat would be needed any more. Take it out, and if it overheats, put it in, and if that fixes it, come back here and tell me.