The valvetrain is a decisive factor in determining the engine breath at high rpm. If the vehicle possesses a larger bore, it will allow for larger valves. Thus it imparts more airflow at higher rpm.
It can be said that the larger valve can lead to valve float. But it is more challenging for engines to have two valves per cylinder. But you can overcome the problem associated with valve float by using the stiff valve spring.
But you should bear in mind that more energy is required, and the system is not much efficient in doing so. You can use valves made up of lighter material to prevent the use of stiffer valves.
In this way, you can tackle this situation proficiently. It would help if you took care of these sensitive issues associated with valves.