Stock gearset. Should be able to run it 6500-6700 with the parts you have. That said, not sure how much rpm those hydraulic rollers like, never used one. I have heard they don't like rpm.... but i dont know
I shift at 6200 because it doesn't run any better wringing it out, and i don't want to roll the dice with stock stuff in the rotating assembly. Its all balanced and nicely machined, but i like long healthy life at my age not having to open the hood up
