Just wanted to say I did this mod and am completely happy with it! No more burned oil smell after WOT.
A much improved PCV system now with no PCV valve now!
With my LS1, I didn't need the kit plug but here's the kit I bought: http://www.improvedracing.com/engine...kit-p-633.html
Also changed the power steering pulley from the crappy plastic one, to the updated metal pulley.