The hand crank from Pro and Pro TL models will also fit a Super. I can verify that from personal experience. eBay sellers joshuacohen and tmrpromotions (who both sell a fair bit of Mamiya stuff) often have them, but neither of them seems to have one at the moment.
Thank-you for the replies, and sorry I did not respond sooner, But I did find one new in the box and It works great for me. It makes the camera so much more portable.