[blykins]

The RM-6057 is for an FE with a Toploader or short shaft TKO, is that what you have?

Next thing:

Don't worry about the pivot ball, you will never use it. It doesn't work with the bracket.

Now, take that L bracket that has the big rectangular hole in it, and you'll use it with one of the spacers and two of the bolts that come in your hardware kit.

Your clutch fork should have a long metal spring tab on the back of it. That tab on the fork clips into that rectangular hole on the L bracket. If you look at the back of your fork, you'll see what I mean. If your fork isn't made like that, then it's not a regular older-style Toploader fork.