I would say Go For it!!

But as ChassisMan ststed you need to remove it every so often.

So some where in the Sponsorship contract have a clause that requires them to replace it every year (between seasons)with a different design or scheme and if they decide to pull out of sponsorship they are required to remove their product and return car to original state.

Let me know how it goes. I may be in for something for the Dakota. Whenever you get it finished.