Does anyone know if it's possible to connect a 2004+ ML+NAV stereo to a 2001 LS? I've got ML+Nav in my 2001. I'm looking at various DSP options and know the 2004+ LS' have that option built into the factory stereo. Wondering if it's possible to add an adapter to my existing 20 + 6 pin stereo wire harness that'd convert it to the connectors needed to enable the 2004+ stereo in my car. I'm guessing the wire harness for the nav unit would probably need a similar adapter.

Anyone done something like this or know if it's possible? Thoughts?