Dang, I think those Disc Brake Australia rotors went on in aught three if not earlier; it was a fiasco. It's almost embarrassing to see how tiny they look as compared to the rest of the truck nowadays, but they've held up well. Just had them resurfaced last year.

I would not run without the brake backing as it does provide some protection for your axle seals... especially if you put a nice bead of silicone or even a thick dab of grease around the inside before reinstalling them.

Good mod for the weekend. Easy peasy Japanesey.