I would, but consider a couple things. One is that if I personally got a S2K, I would want to mod the hell out of it because of its potential. Two, the parts, or at least good parts, which are expensive as is for popular cars like Integras...are outragously expensive for S2Ks. I paid $500 total for a catback for my CD7 that now lays in rest at a junkyard, the same exhaust for an S2K is $1500. For just an exhaust!
I guess do it if you have serious cash, if you don't I would stick with the Teg.
Sidenote, you gotta love an S2000 for the 50/50 weight distribution and having Mustangs in the rear-view mirror in very short order.