Need an aux oil return line valve for my new oil pan - the old one

What is your question?

I bought a new mopar oil pan for my car, and got everything in, but realized that it didn't come with the aux oil return line stem. I took the old one off of the used pan and it only fits into the oil pan - it doesn't match up with the coupling that is supposed to go into it. Where do I get one that has the same size threads for the pip fitted end and the oil pan?