I thought all Camaros used the splash shields from 2012-15. So you may or may not need them on a 2010? I dunno. I put the entire ZL1 front end setup on our 2010 back in 2014 and I don't recall buying or using those.
And those air ducts are CHEAP ass plastic that are basically 2 halves that sloppily clip together IIRC. They feel flimsy and gimmicky. But they do work to a degree.