OK, replaced the fan clutch and the fan.. ( Good grief, I accidentally dropped the original cracking one of the blades). Replaced the coolant temp "O" ring. Replaced the coolant level sensor.. the one that came out had a black tube shroud around it, that was brittle as hell and disintegrated in my hand. It looked completely intact so I don't think any of it is floating around the coolant passages, hopefully? No leaks so far..finger's crossed.