Top speed maybe 110-120km/h, in 3rd gear it's just over 6000 rpm at the end of the straight. And aside from the initial start and any restarts the car runs in 3rd the whole time. So with the FE box I would be getting over 6700 rpm at the end of the straight. I don't really need top speed, just acceleration. And the gearing has to be right so I don't have to shift.