New custom manifold will soon be available, but not recommended unless additional mods are done. Since these turbo’s have the possibility for 600whp fuel systems are required. If the goal is 500-525 whp, then fueling may not be needed and definitely not the manifold. Production is slow. I am having difficulties trying to get these sand casted. All the 3D CAD models are done. Here are a few pics of how it will look.