A lightened flywheel is a common upgrade for any car, but it is important not to get too light of a flywheel...the inertia of the flywheel is necessary to keep the engine running smoothly, and if you go from a 12 lb flywheel to a 7 lb one, your engine won't idle well....for daily driving, that sucks. AFAIK, 2-4 lbs lighter is usually safe when getting a lightened one, unless you're serious about modding your car.