sort of. I list a serial number start somewhere on this forum. I don't think it was a precise 2013 to 2014 cut off. We switched when we ran out of the old style chassis....so there may be some 2014's with the old build.
So is there differences in the 2013 & 2014 dimensions....no, but there are dimensions differences between the old build and the new build. Basically they got 5" shorter and 3" wider. No wholesales changes. Lengths remain the same.
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).