Very nice attention to detail on that safety wiring. You have it ran correctly for tension in the right direction. Seen a few examples where people didn't do it correctly.
Is that "AL" for aluminum, or just a designation? They look like steel. I wouldn't think aluminum would be good for a drive hub because of the lateral forces in corners.
It would be killing me not to hear that engine run. I think I would be starting it up every few days just to hear it run 
Thanks for the props on the safety wire job.
As for the drive plates yes they are aluminum. Yes the Aluminum makes them a wear item that has to be replaced. Kenny at Speedway told me for a street car you should run steel if you plan on a lot of miles. The AL is a significant weight savings. I may pick up a set of steel plates to run on non track days.
Bottom line is to inspect, clean and grease them regularly. It's pretty easy. Wheel off two allen head bolts remove the plate. Even a cave man could do it.