Has anyone used a modern Sirius chrysler antenna on an old Mopar?

So the short answer to your question is yes the SMB cable will work on any satellite radio. I am putting in the same antenna on my 65 Valiant. I am converting my Factory AM Radio to AM/FM/AUX IN/BLUETOOTH using the original radio.

The other Awesome thing about the BLUETOOTH in the original radio is I can also stream the audio from the sirius xm app on my phone.

I kept the stock antenna on my 64 Barracuda and have the AM radio converted to AM/FM/AUX IN/BLUETOOTH/USB and just stream that way. Its also nice to stream pandora too.