Yeah that coolant sensor was probably causing grief. A couple of my Saturn's had that problem. The one would try to overheat at drive through lines and stoplights. Always idled high around 1200 rpm and the radiator fan never turned on. At the time, nobody had a solid bronze sensor for a Saturn. I ended up using one for a cavalier or Malibu or something and it did wonders. Never tore up again.
While you have the block apart, take measurements of all the important stuff. These engines have super tight tolerances like a Honda. Especially the cylinders. If they are not all in spec, the (weaker than usual) rings will never seat, and the engine will let you know.
Somebody's gonna love or hate those dogbone inserts. If the stock ones were worn out at all, the new ones will make the pedal response much more like a trans am or Corvette. The tip mount stops the rattling and the other three keep the engine tight.
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