Can any of you Sirio (Werks) guys help me out. Is the head bolt pattern the same as a Novarossi or Picco. I want to get the Trinity Phatt Head for the motor because they are only $35 but they only sell them for Novarossi, Picco,and OS. The guy at osrocketracing.com said his heads would fit but they are $65. This is for a B3, I just want more cooling than the little 8 fin head the motor comes with. Thanks for your help. PS This is for Buggy