Aftermarket bumper. Connect tow bar to the D-ring loops, or Blue Ox makes brackets that bolt to the face of the bumper. I have done it both ways. Works great and nothing to see, hang down, get snagged when off road.
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.