Yes, really, if you are making the 2014 version , the Miller Lite logo at the front of the trailer is bigger then are you going to get from a decal sheet, but the one that goes on the hood from the 2013 car, would probably work, same for the rear of the trail lift gate.
If you are going the 2013 , same size decal on the side of the trailer.
And as you can see, Penske keeps his trailer really clean of sponsor logos,
Not right now, now, and you are not going to be able to make a current Gen6 body from a Gen 5(COT) body, not even close , you are better off getting a diecast , or wait tell Mike @ Mikes Decals gets the 2013-2014 Fusion Body done.
You can find decals here, sorry, the website is not set to let you link to each item, you are going ot have to find them on your own, but, just click on the numbers on the left side of the page, and scroll down and you will find them.
http://members.optusnet.com.au/pattosplace/home.html