so i own a 2001 buick regal gs. next summer i was planning on doing the zzp stage 2 kit. I recently found out tho that ppl do a gen 3 to gen 5 superchager and intake swap along with a northstar throttle body....are there significant gains here? or should i just stick to doing the stage 2 kit? OR should i do both? help me decide and understand ppl!