It's a good idea to leave some slack in the line so that you can pull the gauge out of the pod if necessary. And make sure there are no leaks after a few days. I had to make it REAL TIGHT (at the back of the gauge and the T fitting in place of the oil press sender) cause I had a leak on both ends. Use some thread sealant on all connections.
Yup, it moves A LOT more than the stock gauge (but they somewhat match).