Just paid 13.00 a gallon for a barrel of C12 from VP. It is going in a SS/LA car for NHRA class racing. My question is this, What do I need this expensive fuel for? Is it required by NHRA? Does it provide a HP boost? Can a simple 110 octane do the same job? And pass NHRA fuel check? Looking for answers, the NHRA rule book is no help, and VP website does not help.