He hasnt quite caught up to the 2 year old 448 dyno engine but thats got to be way better than the porting he was doing up till recently. I doubt any of those ever beat a stock head.
I dont know Wistech for absolute HP you are right for sure but for me I might give up a little of the peak to get that nice curve.Just think if he had AFR correct which was way off.peak might just be right where you are.