Ready for coilovers, but I need help choosing them

[tibimakai]

My rear springs are just that 275/10". I will swap them out and see how it looks then. Thanks.
To me, as a novice, the springs with 375 feels quite soft, I'm not sure if the 275s will not be to soft.

[Miatav8,MstrASE,A&P,F]

The springs will either hold the car up on that corner to ride height or they will not. Resistance to body roll is from swaybars. Stiffness can be increased with damping adjustment or using shorter, higher rate springs that come off the seat in droop or droop is limited or a soft spring is added to the stack (generally flat wire springs) to take up the difference in droop but stack solid at ride height.