The engine would start out as the predator 212cc or 420cc engines from harbor freight. My son turned 10 in September so if I read the rules correctly he’ll be in comp. Most of what I read in the rule book were flatheads which was why I wanted to clarify. I’d want safety items like a billet flywheel ...

Are the ihra rules the engine rules for the juniors as in flat head engines only or would an ohv engine like one of the predators be allowed? Thinking of getting my son started but have to figure out what I can afford to maintain for him. Thanks in advance.