I didnt trust the stock temp guage. I installed a Stewart Warner mechanical guage.
Also I built a brush guard for the front of the Jeep and mounted 2, 6" 100W lights in the middle of the brush guard.
One time I removed the lights to see if it improved the air flow through the radiator. It dropped my temps maybe 5-10 degrees but I still was running around 220 deg.
The headers were a thin wall metal type and they radiated allot of heat under the hood. I modified them so the collectors were inside the frame (not going out the fender wells). My goal was to keep the exhaust tucked up inside the frame rails for better ground clearance.
By tucking them inside the rails it may have blocked some of the air flow out, beside and underneath the motor.
It's a happy motor now