This is the left side Tri-Y manifold that i had for quite a few years. At the time, i purchased it from the person that also owned the set that i posted pictures of. Until Scott posted pictures of the Tri-Y's installed in a car, i too have never seen that before. At one time i actively tried to find a right, but i never had any luck in finding just a right side manifold. I really don't think just a right exists anywhere anymore.