I did a ton of research on this and discussed options with my local Jayco service mechanic. I ended up going to a well-established welding shop. They removed the existing thin bumper and fabricated a new square bumper with an integrated 2" receiver, then installed it to the frame. It was expensive, but the work was top-notch and the hitch works great with our high-end Saris bike rack, absolutely no bounce or movement. I've seen and heard horror stories where people have used bolt-on receivers and cheap racks, and end up with problems.
2010 Jayco 17Z
2007 Jeep Commander Overland 4x4 HEMI