It appears that with an 85-degree bend and .405" wire diameter they have gotten away from the lower ride height for the SRX. I bought some SRX/Thundercat torsion springs at the end of last season to lower my ride height. They were 100-degree bend with .405" diameter wire (less preload than what came on my 17 LTX SE but thicker wire diameter).
My stock 17 LTX SE torsion springs are 94-degrees with .394 wire diameter.
The stiffer torsion springs on the 2015 Viper LTX SE that I had were 94-degrees with .405" wire diameter.
It appears they have gone back to the stiffer spring rate with even more preload then the 2015 Viper had.