Just for reference I tapped the pan at the rear in the drivers side. I did it on this side since the wire for the sensor will go into the interior through the steering shaft boot. George, i didnt use any sealant or teflon, hopefully it wont leak...did you use anything? I was thinking to maybe use a very light coating of Blue RTV where the inside of the pan meets with the sensor....sort of to create an RTV washer all around it but without coating the rest of the sensor. What do u think? That way the sender still makes full contact with teh pan for ground, and is 'pluged', to say the least, on the inside of the pan.