I actually don't think that will be an issue. As far as I understand it, the SS700 is more of an evolution than a revolutionary design. Both the RS600 and the SS700 are roughly based on the T45, which essentially was a 5 speed version of the T56, and had many interchangeable parts.
Andrew
You could be right but this thing has to stand up to 700 ftlbs with my abuse.
Go to 5speed.com and send Paul an e-mail. He builds road racing transmissions with and without dog ring. Not sure if he is still building the T 56's but he may have something for you.