Temp. Sensor connector question??

Hi,
I have a 1972 340 and my question is where can I find the connector for the temp. sensor. It looks like a little cap that fits over the top of the sensor. I've tried everywhere around my area with no luck. Is there some place on line I could find it?? Anyone have one they want to sell?? Who ever thought this little part would be such a pain.

Thanks

Ton