Lord_Zath said:Keep in mind spool up and such. A smaller turbo will spool up faster, meaning you'll get power sooner. A larger turbo takes longer to spool up and will build up more hp higher. Would you rather have more power sooner that lasts longer in the powerband, or have much more power that lasts less in the powerband?
Also the SS kit has the super happy mushroom exhaust manifold, helping spool up the turbo much faster. (does the thumper have it too?)
the thumper kit does have a sexy manifold as well.
http://www.**************************.com/images/thumper/IMG_0163.JPG