I'm really impressed with the RAD valve on my 250R so I'm thinking about getting one for my Tri-Z. Did Boyesen ever made a RAD valve for the Z? Or, if not, does anyone know if the Banshee manifold will work with the Tri-Z. It looks like the Banshee has the same 4 bolt manifold but I'm not sure if it has the same dimensions. I know Boyesen makes a RAD valve for the Banshee, so I'm thinking it might work with the Z.