In the ongoing quest to make my 70 Charger more fun to drive, (including long distances) I want to install a modern style rearview mirror in the car. Years back a buddy installed one in his 71 Challenger. It had an auto-dimming feature along with a numeric display for temperature or a compass, not sure which. I'd love to have this sort of thing for my car. Does anyone know of an aftermarket kit like this?