I've been doing some major research on this and from what I've read, 1st and 2nd gears will show a substancial improvement. In one of the articles I read where the stock flywheel was 25lbs with a 2.5L engine, in first gear it was equivalent to having 225lbs less in the car, nearly 80lbs in 2nd gear. It all depends on the gear ratios of course, but during a launch there should be noticeable improvement.

__________________
VIN #3247
Mysterious/2 Tone Leather Decked (everything but AC/OnStar/XM/Smokers Pkg)

Mods: Eibach Lowering Springs, Tinted Windows, Kappasphere CAI and Exhaust

Future Mods (in the order I plan to do them): Flywheel & clutch, Dyno/Tune, Turbocharger