Hi Guys and Gals,

I notice that it has been recommended to use '08 and newer Cobalt SS rear springs to level up an HHR. What is the difference between the '08-'09 SS springs and the earlier springs. I am sure there is a spring guru online here. :-) God Bless, Marc

The 08+ are a little stiffer, they upgraded the suspension when the cobalt ss went from supercharged to turbocharged.

Okay, got it. Many thanks. Does anyone know the part numbers for the earlier ('06-'07) and later ('08-'09)? Best wishes, Marc

Here goes-05 to 07 front:21994335(rt),10382250(lt)
08-09 front:25833647
05-07 rear:10390024
08-09 rear:25821162

Many thanks Tony! That was exactly what I needed. Is this Forum great or what? :-) God Bless, Marc