[Stocker]

Some will disagree, but IMO there is nothing to be gained with a 160 (or even a 180) thermostat. It probably came with a 190 or 195 and assuming the t-stat is good, it will not cause or contribute to overheating.

Are you sure your 210 reading is accurate? Even if it is, that's still not overheating. Water boils at 212, and pressurized 50/50 coolant is closer to 230.

A couple suggestions. A coolant recovery tank lets you fill the radiator to the top, which means more coolant in the system, which may help it run a bit cooler. If you do this, you will also need a new cap for a closed system.

More importantly though, I would definitely replace that fixed-blade fan with a clutch fan. It will pull a lot more air through the radiator when necessary, and partially disengage when extra cooling is not needed. It's possibly the best improvement you can do to your cooling system.