Extra water temp sensor location

Hi, I had a slant 6 with FiTech 4bbl TBI. I put the FiTech water temp sensor at the head near the thermostat. I also put another temp sensor, for my temp gauge in the dash, on the passenger side of the block, there is a threaded plug down on the side rear of the oil pump that accesses the water jacket.

I'm going to use the FiTech unit on my 360 Magnum, is there a similar threaded plug somewhere where I can install the extra water temp sensor? Pics are welcome.

Thanks,

Brian