Here's what I did to solve the problem. I'm reading the oil temp going back in to the case from the filter.
![](http://i8.photobucket.com/albums/a6/Hotrodvw/VW%20Tech%20Pages/0708091909-01.jpg)
To answer your question about the header temp, assume it's hot enough that it will burn the nylon braided hose. You can install a heat sleeve over the hose like I have here.
![](http://i8.photobucket.com/albums/a6/Hotrodvw/2007cc/0126092050-00.jpg)
![](http://i8.photobucket.com/albums/a6/Hotrodvw/2007cc/0126092116-01.jpg)