Hey my stepdad is going to be taking order of an 07 Power Wagon silver. We have two questions. On the highway the PW was averaging about 21mpg the whole test drive, I'm trying to find out what some of you guys are experiencing. Also there is a plug that is mounted near the grill, looks like a regular house outlet, any clue to what that is for? My guess it is for the engine block heater, but we live in Florida and have no need for it? Also from ya'lls experience do you know of any great exhaust that is optimal for the use on the power wagon with good sound but not too loud? Thanks, I'll post pics if the deal goes through.