[Reed]

if its even possible you would need a wide open throttle sensore to activate the buttons and disconnect the computer fromt hte tranny so that you could drive normally and then shift yourself when you are racing but i think this would give all kinds of errors to your computer so i dont even know if the system would be possible. you could however probably put a button on your steering wheel that wuold put you in low gear and then when you hit it agai put you in 2nd then when you hit it again put you in drive for the rest of the gears.