Super Victor port match?
Soooooo, if on a motor that makes about 1.5hp cu/in, in the 700hp range ........ and the intake is run ootb vs the big dollar “full monty” Wilson job that’s well over $1000, and gets you 30hp......... how much difference do you think there is between ootb vs just cleaning up the port exit....... on a motor making 500-ish hp, or closer to 1.25hp cu/in?
As Skrews already pointed out..... the opening is intentionally small so it can be fitted to a wide variety of heads without needing welding or epoxy.