Any idea how much hp difference between 1.5 stamped and 1.6 roller rocker would be in the 305 TPI? I’m 5hp and about 10ftlbs short of the allowable limits. Saw in the rule book I can run them. No experience with them and google searches return garbage. I shift around 4500rom so valvetrain stays pretty happy most the time with little maintenance. Just curious how much it would make if anyone knows.