Question about shaft style stereos

If you just want some quality sound install a modern unit under the seat and use the remote to control it. Get one with a USB to connect your phone.
No, I don't think that will work. My phone has neither usb, or bluetooth.
I would rather have an older rig from the 70's or 80's that fits nicely into the original stereo location. That way I can listen to my local FM station and play my cassettes when I'm out of range.