With your mods and him just having an exhaust, you'll be fine.
But to set the record straight:
My brother has a 99 ZX2 (not an S/R). Bone stock, he ran a 16.3 and I ran it to 16.0.
With an intake and exhaust, he was in 15.7 range.
Now, with an intake, header, exhaust and pulley, he has ran his best of 15.5.
All on 17" wheels.
Why is hard to believe that the ZX2 is a pretty close match? I've seen times from unexperienced SVT drivers with equal or slower times!
I don't think it's one of the "special" ones, but here's a pic.
