The guy that did my exhaust used the left factory rubber hanger and welded a J shaped rod to the left outlet pipe. He would have done the right the same way but I could not find it. Instead, he used a 2 1/2" clamp with a rubber strap mounted right behind the the tank.
I'm looking for the right hanger still. I'll either order another or take it off of the 89 parts car and have him weld another J rod and take that rediculous clamp off. the J shaped rods were also used to secure the cat and can be seen in the following pic before they were welded to the pipes. They are dangling from the factory rubber hangers