ETNav382

I've searched and have used the awesome DIY pdf for the sideskirts by andy 545 and I was looking his rear bumper install one. My kit did not come with that massive amount of stuff. I got a little box with three bags, one that seemingly had complete replacement parts for the skirts, that already had the parts on them. I also had another bag that I'm thinking goes for the front bumper, since it had springs and stuff for the headlight washers. So, according to his DIY I'm missing a lot of parts. Has anyone recently did this themselves and can offer advice?

Also what is the standard for what should come in a complete M retro kit?