no one really modifys the ybp head do they???? i have always wondered why? i read an article about it and it mentioned that the reason why they dont modify the ybp engine is because of the engine management??? its costly and you get small bhp for the $$$.. but if you are running aftermarket there really shouldnt be a problem getting big hp from the head.
other than that i haven't really read much about the ybp head? you could be onto a good thing? will be interesting if you end up using it. the yb head is getting too common these days anyway [:u][:x)]