in need of help.Spring rates and sway bars
 

I tried to figure this out myself but got all confused maybe some of the experts here could help me.

2003 touring
spring rates and sway bars

2013 base
spring rates and sway bars

2009-2013 nismo
spring rates and sway bars

I miss my 350z suspension!!! I miss pulling up to stop signs and feeling like a bullet being chambered in a gun(no nose diving). Right now it feels like a Buick/Cadillac. I miss taking S turns and chicanes with absolute confidence and without the car getting unsettled. I miss drifting with confidence and ease. So can does anyone know what spring rates and sway bars I would need to get this "feel" in my 2013 370z?

Thank you so much in advanced.