Here are tractors with Athearn Overnite doubles, Trainworx 40' drop frame and DigCom Designs 53' UPS Freight trailers, front to back. 20160309_171152 by Adam Henry, on Flickr
I expect to see Trainworx UPS tractors on Eeekbay within a week (or less) selling at a minimum of 4 times the original selling price...LOL
Weird, I can see your images when I quote you, and while I type this, but I can't see them in your original post.