News:
You may want to weld the nut to the outside or you will not be able to drain all of your fluid. Good idea though, I have been thinking about buying a pan with a plug also.
Since I have a bad habit of scraping things on the bottom of the car, I don't want this to stick out any more than it has to I was thinking that I might put the nut in a drill press and make some holes on the bottom side to drain fluid.