Anyone can mold anything to your car. How much they charge, and what it looks like only time will tell. My instincts tell me it will look like s***. Unless this is a very credible body shop, with lots of pictures/examples of their work, I wouldn't try it. You may end up hating it, and since it will be molded to your car, you'll be out of luck.
EDIT: What kit by the way...I'm curious how extreme you are talking here...