I spoke to the Customer Service rep years ago about ordering a seat for a Classic. She told me that they don't make a seat for the Rocket and don't intend to. I guess it was the way she said it that really put me off, like I was an idiot for even asking.
While I have purchased used Mustang seats on line since then, and believe them to be great seats (I've had four-one new) I will never purchase a new one again. Jerks