Your answer is the exact reason they stopped. They were shooting themselves in the foot financially (and I predict Edelbrock will never sell templates for the same reason. If anyone were to, it would be Summit or something). MP sells hp heads that they have developed ($$$), and they want people to buy heads to help them recover their investment (and heads probably have a higher profit margin anyways). They decided they probably didn't want someone buying a $40 template and DIY, when they could sell you a $400 set of heads instead.