I am using a Hurricane burner with the NG conversion valve. All they did was drill a larger hole. I am going to convert another LP burner on my own with some wire sized drill bits I bought. You can get a cheap set @ Harbor Freight. Drill holes slightly larger until you get what works. You will also need an NG gas line and fittings.
Don't blow yourself up - if not comfortable with the process you are better off buying the Hurricane burner & NG valve.
LP burner from agrisupply.com