You can get XM dealer installed using the plug and play type units. I personally like the plug and play type better. I have used XM in a factory stereo and I bought a sirius plug and play unit and the plug and play is so much easier to use. But then again I can't see paying for 2 subscribitons when I can only drive 1 car at a time.
As for OnStar I have never had a vehicle with any system like that but I can't see how GM couldn't put onstar in an H1. The only thing they wouldn't need is the airbag sensors but everything else would be ok to use.
Chris
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