Oh ... 4th gear is probably somewhere close to 130ish. I definitely recall having to shift to 5th when I hit 140+ mph at COTA a few years ago. Not theoretical.
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2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed | |