Infinity G- coupes are quick!

He might have been down on horsepower, but with 7 speeds, he probably made that up in gear reduction. Ratio's I found online show a final drive of 3.357 and transmission ratios of 4.923, 3.193, 2.042, 1.411, 1, 0.862 and 0.771.

If your car has 3.55's, 3.09 first gear, and your motor makes 400 ft/lbs, his 270 ft/lb motor puts more to the ground in first than you do. 4387 vs. 4462. He loses this advantage in each higher gear, but in the mean time, he is closer to his peak torque longer than you are.

Might not win in the end, but stop light to stop light, the ratio's might make it a car to deal with.

Just pointing out that there is more to the story than how much hp someone makes.