Plastic CCV tube? Ive never looked closely at a stock SD installation, so Im not sure what that means.
I was just looking at my air filter (quick cleaning) yesterday and happened to look at the doghouse that bolts to the valve cover (which is now on backward for the CCV hose). It looked identical to the doghouse I recalled seeing on the OBSs.
What that post is alluding to is that the OBS uses the metal piece and a different boot from turbo to CCV housing than the SD; the SD uses basically a piece of PVC pipe with a port for the CCV and a couple mounting points molded into it. As far as I know the dog house that bolts to the valve cover is the same.