Nothing saying you can't make minor mods to them to make them fit. Should be pretty easy with a sharp knife blade. I don't know for a fact, but I imagine the floor contours are the same.
I have a set of Husky Liners for a 2012 in my 2013 and they fit fine except for the quarter turn twist fastener. I just laid them on top and it's not a problem.
Then we're back to cutting out the 1/4 turn lock recesses, or not. Is it worth the savings to have 99% coverage? I would say yes, but it's not my 4R. :wink2: