The classic Alpine (-osaurus, lol, that was good) is destined for a 1990 Porsche, new toy. Researching how to add bluetooth because we all know nobody is rocking cassettes anymore. If Alpine still made anything close to as good as back then I'd just go that route provided it looked periodic correct. Something new in the dash won't do.
After more ilooking around an FM modulator w/bluetooth seems to be the direction to go.