tbelt change. Granted, I wouldn't be the least bit surprised if it's just getting a bit of blow-by when cruising at 3000rpm+, but I have to imagine a PCV for it should only be a few bucks.
As a side note, it's freakin awesome being able to do a complete Tbelt service, including studs/pulley/tensioner/waterpump/tstat/valve cover gasket/etc for under $200 using OEM parts, AND be able to knock it out in 1-2 hours working at a leisurely pace, AND without busting any knuckles.