So here is my write up of the rear hitch mod. You first have to take the bumper off. You have to undo the tabs holding the bumper to the fender well. Then take the fender wells out. Take the 4 tabs off that are on top of the bumper under the lift gate.
There are also two screws on either side of bumper under the lift gate that also need to come off.
There is are two screws left to undo, one on each side inside the fender wells. It took me forever to find these because I did not know you had to take the fender well liners out. Here is a pic of where those two screws are. The top hole is where the screw is.
Once I had the bumper off I took the hitch off and grinded it down and took off the tacked on nuts for the bolts.
I replaced the factory bolts with much larger, thicker carriage bolts, 5/8 to be exact. They required a slight modification to fit flush with the hitch. I had to grind a small amount of the metal off the top of them so they would fit in the hitch holes. Also had to put a slot in the top of the carriage bolts so I could get a screwdriver in there to hold them in place while I tightened them down.
Here is a front and back view of it installed.
At first it didn't fit so I had to take it back off and grind even more off. Notice in this picture how it is slanted back slightly so the tire will fit.
And finally the finished product.
The tire does not go completely up against the top of the spare tire well, but hangs down a bit. To make sure it is secure and take some of the weight off the cable that holds it up, I took some motorcycle tie down straps and hooked them through the wheel and secured it to the frame to keep it from moving and take some of the weight. Fits great and now I don't have to worry about it taking up my entire trunk. Pain in the A$$ but very worth it when its done.