Interested in this as well.
I know this is a few months old but I found this...
https://www.ebay.com/itm/202478072934
I ordered one but it has not come in yet...info near the bottom lists 2018 GT w/ 1.6 so hoping that it indeed fits
Well kban nailed it...a little too long and a little too wide...Nicely made so being I have time on my hands I am going to make a cardboard template and modify it...and if things like this go as usual, toss it in the garbage lol!!It probably won't fit, but could be wrong. I ordered one that looks exactly like that one that fit the Elantra Sport and it doesn't fit the GT...It's a little too wide and too long.