I am pretty sure a chimp could change the RMS in 14 hours . Call Tony at Callas Rennsport in Torrance, or Loren at 911 Design in Montclair, for a quote from either very experienced Porsche repair shop around LA.
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.