On the intake mainfold, behind the fuel filter, there is a 1/2" drive plug, it is near the MAP sensor. If you take a 1/2 drive extension, and a drive ratchet, you can unscrew it. The plug is 3/4" male pipe. You can then go down to the local hardware store, pick up a square drive male plug, the one with a square protrusion extending out the back of the plug, and drill and tap it for the same thread as the Boost sender you have. Then screw the new plug back in. install your boost sender. Keep the old plug incase you want to return to original setting.