The 350z should of lunched the S2, i've driven a few S2000's, including the latest update model, which has close to 180kw's, but in a straight line, they're not that quick off the mark. The top end is great, and that's where all the power is produced.
A lightly modded 33 should kill it off the mark and in a straight line, put it on a track with a good driver though, and it'd be a different story.
And munro, the new s2's are only about 68,000 i believe, so good luck getting 72,000 for it bud.