Help with markings and #'s on new truck

[cmp_uc_guy]

Hello and thanks for having a look because I would like to confirm some things about these markings on my new CMP.

Drivers side above light= "5" bridge weight yellow circle?

Pass. side= tac marking top triange seems to show up but the bottom one doesnt. Any ideas what this would be and could you post a picture of what it may have looked like.

then theirs the "z" above "51-300" I think.

I'm lost when it comes to markings and need the experts help!

Rob