[Saaberachi]

I would just install PCV #6 and nothing further. That setup has proven reliable for countless OG9-3s and early 9-5s. Keep your eye on the rubber parts and replace them when needed. My experience is that they last 10 years or so, as do most rubber parts, and then must be refreshed.

Unless they're pps brand hoses! Slapped a new set in a yr ago & they're already feeling mushy. But i guess thats to be expected