In the pack of registration information I received from EAA is a name plate. The name plate is to be attached to the fuselage. I think it is really called the data plate. So I riveted it on in the place most production data plates are located. This is under the horizontal stabilizer. This one is pretty simple with just name, model and seriel number. I guess that's enough.
I also registered my RV. It is N454SL. Now this is no longer a box of parts, but is an airplane. I called my insurance to make sure all is covered. I am until I start it up and fly. I need to call insurance again before doing that.