Having been involved in the design/production of a ground effect kit before, you will have a very tough time "profitting" from a body kit unless you have the means to produce it yourself. If you are lucky you might find a company that will build the kit for you, but don't expect them to pay you for the rights. Infact, expect to have to pay them and lend your car to them for fitment.

For a car as rare as the crossfire, there just isn't a big market for kits for these kind of cars.

With the right design, a body kit can help enhance the appearance of any car.