When I was a kid, my dad used our FJ55 to pull several diffrent camping trailers all across the country. Trailer size ranging from 26' to 29'. Him and my uncle built a 2" reciever that went through the stock rear bumper and continued under the gas tank to a crossmember that they added. It did not interfere with the spare tire carrier in any way. I would show you a picture of it, but ... well I cut it out and built a bigger rear bumper with three 2" recievers. Two for reciever shackle brackets and a center one for trailer pulling. However, here are some vintage trailer pulling pictures from my childhood. Local Colorado folks may notice the picture on the top of Independence Pass. They don't allow trailers on that road, but dad was never one for rules.