The scales that night weighed my NA @ 3495 lbs. with me in it, passenger seat removed, full sound system subwoofer installed, low fuel light ON. Here's a link to Arnel's 1/4 mile and horsepower calculator Based on my timeslip information: "Your 300ZX which weighs about 3495 pounds should complete the 1/4-Mile in about 14.59 seconds, if you can produce about 222.42 HP at the wheels, or about 289.14 HP at the flywheel."