Good response to your query. I'd add to check the fan clutch as the cause of the overheating. When the temp rises to 210 + or - a few degrees, you should hear a definite change in engine noise. You should detect, easily, a definite roar indicating that the fan has engaged and is now pulling air through the radiator.
Good advice on the U-Joint(s) and carrier bearing. Throw a quilt over the engine hump and see if that quietens things down a lot. If so, the leakage is around the engine hump and lack of insulation to quieten things down.
If it doesn't....learn to live with it. :(
Perhaps your belt is't tight enough on the AC?? Is it the right belt?? Pitch and width?
