There are both that were made for the cadet lawn tractors. They show up on e-bay from time to time. If you put an ad in the wanted section you should get a reply.
Kyle M: You are correct, but I note that he used the word "other". To my knowledge, there are no other models/versions that are useable on a Lawn Tractor except the ones IH sold for them, mods or not....he needs to remember they are just tractor style lawn mowers. He might be trying to "make a silk purse out of a sows ear"...