I agree. I've had my car up to about 125 on some country roads and I was at about 6000 RPM. I wouldn't think the car could go much past 135, maybe 140 by the time the rpms get up to 7100.
If you don't have a chip and therefore still have your RPM limiter set at 6200 (6200 is stock, right?), you probably wouldn't be able to go much past 130 (if the speed limiter didn't kick in first).
This was judging from my car's speedometer though, from my experiences at highway speeds my car usually reads about 2-3mph faster than I'm actually going.