After a little work I found a set of 09 Cobalt SS Sedan springs from a local friend for $75. We'll see how they work out.

 

If you can, post the part number. If they are different than the coupe springs, the rears might be a little beefier and hold up better on the HHR.
The SS sedan is in lower supply, so the springs might be harder to find.

 

That was kinda my thinking. The SS Sedan only weighs 150lbs less than the HHR... it was as close as I could get to actual HHR SS springs. I don't know if the numbers are different or not, I will post it up this weekend when I have them in my hands.

 

On My 09 SS is it better to just level the rear with Cobalt SS springs or replace front & rear springs