I doubt its the egr, the egr valve in on the back.
My engine is supposed to be a NA (the wreckers told me it was) but who knows, it could be a VG30DETT without the turbos.. Sometimes its worth taking what wreckers say with a grain of salt.
I'm thinking it could be the PCV supply lines... In which case it would make sense they stick out near the throttle bodies.
I'll take some photos when i get around to it.
Please note that this engine hasn't been started yet, so they may or may not be vital to the proper running of it, or at least need to be clogged up so as not to spew oil/coolant/fuel all over my engine bay when i get the engine running.
-Mike