Pete, I took a good look sat the Cruze's tach yesterday, the redline starts at 6,500, I had misstated it at 6,800, there is no orange zone so I'd say the ECM either retards the timing or alternately shuts down the fuel injectors to limit it at 6,500. I've never had it anywhere near that though, it seldom reaches 4,000 with all that low end torque.
I am going to sell the OS 95-v and maybe the OS 62-v also, I have two Saito 62's and a Saito 100, not much chance I'd use either OS.