Ancalagon

My fiancee is looking to get a SS/SC Cobalt. She likes my TC but loves the whine of a supercharger. Ya she likes fast cars too

Her 180SX got stolen

Is there any differences between the years of the Supercharged ones we should look out for?

Also we will be picking up one of the stage kits, I heard the stage 3 disables the AC is that true?

Also what kind of performance gain is there on the Stage 2 & 3 kits?

Thanks!