While I am saving up money to buy some nice bumpers with the built-in hitch receiver, I decided to try my hand on a welding project. This hitch receiver is only intended to support a bike rack with up to 4 bikes, I do not intend to pull a trailer with it. I will do some testing though to see how strong it is.
You can do ANYTHING with steel, an angle grinder and a wire feed welder. OK, probably not ‘anything’. I am still learning how my flux wire feed welder works, and this was a perfect project to get more familiar with it. I bought the 90 amp Chicago Electric model (http://www.harborfreight.com/welding/mig-flux-welders/90-amp-flux-wire-welder-68887-8494.html#.UysZ1V6O2ZM) and also picked up a step hitch receiver.
This bolts directly to the stock bumper support brackets using the holes that are already there. It can be removed easily if necessary. The only irreversible change is that I needed to cut away the actual rear bumper to allow the receiver to stick out.