08 M3 GT Bose HU

[AmFuzzy]

Anyone know what bus the 08 M3 Bose HU uses for Sirius? I'd like to just buy the tuner seperatly and not pay the ridiculous $300+ for the unit from Mazda. I would imagine it uses a bus compatible with one of those Sirius tuners on the market. Just need to know which. Short of that I will just buy the Sportster 5 and plug it into my AUX port. Rather use the HU's display and get the steering wheel controls to boot. Anyone know if this can be done?

Thanks,
-Stephen

 

[icspots]

AFAIK it can't be done.