at sma sydney we had some one come down with a m04 beatle we put it against the m03 class but it was the funnest race watching the handling diference needles to say it came last for some reasen the m03s werer faster on straights and corners eventho both my m03 and the m04 hade the same sports tuned the only diference was m03 was runing 20t pinion the mo4 was runing 21T pinion