11k in the front seems rather low for a car that will see a little track duty. This notion that stiff springs kills ride quality is just because people have dampers that aren't properly valved for the spring rate. You'd be surprised how stiff you can go and still be comfortable when you have well valved dampers.
__________________
'11 370Z Nismo #528 Fast Intentions | Stillen | Motordyne | Uprev | CSF | Zspeed | Z1 Motorsports | AST | Swift | SPC | SPL | Whiteline | Hotchkis | Bride | Schroth | Robispec | Cusco | Nismo | Volk | Forgestar | Hoosier | RJM
'17 Titan Bone Stock
|