2003 Pontiac Grand Prix - Rear sits low

I have a 2003 grand prix gtp really fun car to drive but my issue is my rear suspension has been replaced a couple years ago and it sits to low lower than the front which in turn affects the time off the line what can I do about this without spending the nest egg?

Huh? What does that mean?

In any event, if the rear is low, replace the springs with factory parts instead of the aftermarket springs in there now.