Does the tape deck still work? If so, might be worth using a Bluetooth cassette adapter. I use one in the Regal and it works pretty damn good. I did need to shim the tape head in the adapter for it to work well though. The one I have has a small wire/dongle that sticks out with a button to turn it on and off, pause and skip tracks, and it also contains the mic for hands free calling. For around $20, it might be a good alternative for a fair weather vehicle.
I did consider modding mine, but I haven’t decided to pull the trigger yet, specifically because I don’t drive the car daily….and when I do, I don’t always have going anyways.
Here is a small sample of how it sounds. There is some “tape print through” in the actual track that came through very clearly in the video, which kind of shocked me that my phone picked it up….but it also helps show how well the thing actually works.
IMG_0575.mov