the fact that there is a difference with stock cams vs. "stock" cams. And the fact that we have such open rules and self policing. I just got back from a roundy round race in orlando where I crewed and did a pit stop (on the front straight!) and watched them tear down the top 3 to the block.

the biggest question I am always asked...so you race cars? cool how much do you win....then the explanation of the piece of wood...