Natural Gas Powered Cars I Wan To Start A Business To Convert Standard Gasoline Powered Cars To Natural Gas Powered.?

I wan to start a business to convert standard gasoline powered cars to natural gas powered.? - natural gas powered cars

This would also include the opening of a facility of natural gas. I do use a royalty on the road since it on a gallon of gasoline equivalent PWER, but should be cheaper than gasoline.
So the question is, in addition to the change in the tank, fuel lines and fuel, what should I change into a car?