As I mentioned in my earlier post. I thought it was a good idea to chase the threads in the Farmall 200 manifold. I ordered a 1 1/2 inch tap and cleaned up the threads. The results are not as dramatic as I had hoped but I was happy that I did it. As you can see, there are not a lot of threads in the manifold and the new pipe does not extend all that far beyond the hood, but it will work just fine. I can use the tap on other tractors as some point.