2G Tapped VC?

[Inkdlyfe]

So I found this vavle cover in my boys trunk it's got to tapped fittings in the front of the vc above the exhaust / turbo mani what are they use for ? There only like 4 inchs from each other about a 1/2 inch opening

 

[dsmcrzy]

http://www.dsmtuners.com/threads/the-4g63t-pcv-system.366890/

See pcv setup #3