Looks like Stillen and Greddy are set to square off soon. I guess we will finally get to see which setup the Z likes more.

The way it is looking, the SC will run at roughly half the cost of the turbos. Downsides: new hood, no strutbar, possible belt probs??

Greddy's turbos are rumored to not be working reliably (hence the postponed release). But you get to keep your hood and strutbar. Maybe get more power from the turbos later with some more engine mods?

Both are laying down about the same numbers so I guess track times, reliability, and upgradability will all be factors.