is there a difference between SS/SC springs and SS/NA springs? If i was to put them on an 05 LS is there a drop/ride quality difference between them?

 

I have the SS/SC springs on my 06 LS. They lowered the car 5/8", and greatly improved the handling. Ride quality is a little stiffer than stock, but not much.

 

There is no difference between the SS/SC and SS/NA springs. Handling is improved as Stl06LS mentioned, but the drop is minimal.

 

The drop between an LS and an SS N/A or SS S/C is fairly substantial! The SS's sit, as mentioned, a bit more than 1/2" lower.

The drive quality between the two SS's is marginal - the SS N/A sits slightly lower, and the S/C performs slightly better. This mostly due to the tire and wheel diffference, though the SS/SC does have an improved steering system.

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