A turbo will give you more low end torque down in the 3000 rpm range. The Carpenter mods have all the power up higher in the rpm range. Supercharger will increase torque as rpm's increase but it's also linear with rpm where a turbo is not. If you want to romp on it from stop light to stop light get a turbo. If you want to rap it out like a sport bike and are more interested in top speed go Carpenter or supercharger. All three require a competent tuner and it's not a bad idea to get some kind of failsafe protection like the AEM wideband failsafe gauge or a knock sensor.