This thread is full of BS, crap they read on the net hahaha. AngryRB, a good condition stock turbo Z32 can make in excess of 250rwkw on 16PSI with 98 octane, mod for mod a ZX will DESTROY a GTSt, not even kidding. I know this as my family has owned and i have driven many variants of BOTH. No bias here, just plain facts, My NA ZX is on par with a stock/mild GTSt. Fair few guys are in the 11's on stock turbos with Z32's, including one here in aus doing 11.50's @ 117MPH on 98octane. Few in the US are doing 11.30's/11.40's at 121-124MPH with E85.
The potential is there, just the bad rep from lemons that haven't been taken care of stops people from buying them.