which ignition cylinder is this

So haven't posted here in a while. I've finally got everything torn down and powder coated and MANY ne2 parts ordered, im in the process of reassembly, and ran into a snag, the bike is a 1982 j model. That's what the ignition I bought is supposed to be for . thoughts??

So I guess no one knows? The guys over at z1 helped me out.

Some correctly sizes pics would help. :woohoo: