I would hit it with a 100 shot. I think you will have a handful and will be happy with the results. too many guys claim to be run'n 500, 600 hp or so on the street, I don't buy it.
I just feel like with porter heads and ported intake and the bigger cam from Hughes that it will make 500 hp at the flywheel. And 100-150 shot will just be icing on the cake every once in a while. You don't agree?