Looking for new springs for my 05 Monte LT (mine are starting to sag) I see that there are several options for lowering springs, I do not wish to lower my car. I don't want to deal with short dogs, ground clearance in snow/parking lots, etc...

I would like springs with a higher spring rate at stock ride height. I tried looking for FE4 springs (from a 05 monte SS) from GM but the part numbers are the same and the non-SS.

Anyone know of any upgraded spring options for stock ride height? Any aftermarket brands better then others?

thanks..