I personally don't know this car nor have wrenched on it at any time
. Although, to me it shows quiet a few red flags just from the crappy photos. Especially If this is a car you're interested in taking to the track.
-The A/C line is bent, there was a forward facing turbo manifold there a one point in time. (people are cheap now a days and when one finds an issue they tear everything off, part it out and sell the car as stock as possible.
-Accel Coils, although this isn't a major run sign, its a sign from an enthusiast that purchased the coil's over the factory F or K series coils because they are either cheap, or not knowledgeable about what parts work.
-2 step, aka, launch control. Although the internet claims the S2000 diff's are made of "glass" its not quiet true in my opinion. The Launch control gives me a sign to run for two reasons. This individual wanted two step for one reason. noise, and fire balls out the exhaust. No real drag racer is going to setup launch control at 4500 rpms. There's no torque or power for these engines at that rpm to do anything unless on garbage street tires.
if any of this doesn't tell you to run, then do your self a favor and run a compression and leak down test on the engine as well as sending the oil out to black stone labs for testing.
Replacement engines now a days for these cars are $3,000-$5,000 for a factory engine.
K swaps, send you north of $6,500
J swaps, $8,000-10,000
LS Swaps, $8,000 - $15,000
All this plus labor.....