I have never seen anyone install the 3rd option. I decided not to mess with the radio. I know the dash is easy to take apart, but he wasn't sure if it would work with my radio. I'm pretty sure we share the same radio set up as the corvettes, but I'm not certain. If you email him, he should be able to help you. He had me send the wire diagram to him just to be sure it's the same. He was very helpful and quick with communication.