LEAD IN FUEL WONT KILL THE SPORT.THERE ARE MANY WAYS TO GET THE SPEED YOU NEED(WANT)WITHOUT LEAD.YOU WILL JUST HAVE TO MAKE SOME ADJUSTMENTS AND EVERYBODY WILL HAVE THE SAME DISADVANTAGE SO IT WILL BE EVEN.ALL THAT WILL CHANGE IS THE TIMES BE A COUPLE HUNDREATHS OF A SECOND SLOWER.NO BIGGIE.