I just wanted to update this thread with some new information i found. I just bought this kit to install on my truck and it seems that a change to the temp sensor has been made.
The temp sensor in this kit now uses a different thread pitch from what was listed by the OP in post #8.
The threads on this sensor are now 1/8 inch, by 28 threads per inch Whitworth BSPT, not, i repeat not, SAE 1/8 inch by 27 threads per inch NPT pipe threads.
Now for a word of warning, this new Whitworth threaded sensor will screw into a hole threaded with a 1/8X27 NPT tap. But since the thread pitch is off by 1 thread per inch, and this sensor uses a different thread angle (55 Degree versus 60 degree for NPT) i wouldn't recommend it.
Below is a link to where you can buy the correct BSPT tap.
McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.
www.mcmaster.com