Yes actually we have new blades that will upgrade gen1 front bar...
And also gen2 front bar.
Nismo made a couple rear bars that are/were available for the RC.... But we rated a OEM stock sway bar and the bar that came on our car which I believe was just Nismo stock bar....rate wise around 225-250 lbs per inch??
We used this a a gauge and made a couple rear bars that gave us a good adjustment range.
Not much at all compared to our front