The new X-ram manifold can be modified much easier than the original.With the removable top plates the interconnection can be easily enlarged as well as the entrance of the port runners.The thick walls can be opened up at the gasket areas and the runner transisions can be blended.A lot of weight can be removed from this manifold as it is quite heavy.Done correctly good HP and torque can be achieved.The sad part is a good single plane high volume manifoild can perform as well and even better.