CDR-23 is MOST bus. That can easily be gotten around. The bigger problem is the immobiliser. The older radios were directly coded in the radio. The CDR-23 is coded in the immobiliser, so there is a good chance it won't work with an older immobiliser (pre 2003)
Get the connential unit. It looks OEM
Porsche radios aren't that great anyway
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2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
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