You have a CA version car. Take a look at my DIY link about converting my CA to Federal emissions. I mention in the link about my car NOT having the second hole for the oil drain. I have the oil separator line running directly into the intake tube before the turbo.

Where is your intake and air cleaner?

http://www.peachparts.com/Wikka/OM617CalToFed

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'85 300SD (formerly california emissions)
'08 Chevy Tahoe
'93 Ducati 900 SS
'79 Kawasaki KZ 650
'86 Kawasaki KX 250
'88 Kawasaki KDX200
'71 Hodaka Ace 100
'72 Triumph T100R