I have a 2003 tacoma. I want to chop off the bed and replace it with a tube frame and roll cage. I know that I will need and fuel cell and place to mount lights and a plate. I have a basic idea of how I want it to turn out. The only questions that I have are: Are there any recommendations for what size tube I should use (OD and thickness, I want to use an aluminum alloy?) I live in North Carolina and I am wondering about the legalities of not having a rear bumper? Has anyone else looked into doing this or have any suggestions?