You can get a rather cheap kit made by Truck Master for around $100. It will hold up to a 33" tire. I use it for my 32" tire and I know a friend who is running a 33" tire on it. He has been using it for a long time now, and has not had any problems with the body nor have I.
The kit comes with everything needed. Extended bump stops, tire relocation braket, and 3rd brake light extensions.
I know you can get the kit through Quadratech. I've seen it in there. I bought my kit from a local car shop for $99. I'm very pleased with it!
-Rob