I'm sure you understand that they don't really "start" and "finish" making power. There will be a range in which that combination will make the most average power. Obviously, the range that matters is defined by the shift point and shift recovery rpms. If you are back into the converter after the shift, you need to take that into account.

So generally speaking, that combo will probably make peak power at 5800 - 6000ish, IMO. Best et might be a shift as high as 6300 to 6500. I would think that motor would feel pretty sharp at anything above 2500.