You guys were right. My waterpump (with a black impellar) was cracked in half and a broken fin. So got the new one(with a white impellar) back on finally. Now still have to a rad flush.

Took me a while to find the plug as I am used to the old brass ones.
Question: My thermostat guage still jumps to superhot when I start the car. Is it my heat sensor... if so, what do I need to replace & where is it located? Is it the temperture sending unit or the other thing?