M113 - Good place for secondary coolant temp sensor?
 

Does anyone know of a good place to either drill and tap or use an existing hole for a secondary temp sensor to run my standalone?

currently I have a fitting on the heater hose behind the drives side head and it does the trick just fine, but if the heater is off, coolant will not flow through that area and will not show an accurate reading.

curious If there is another spot. thanks!