It fits but
Will it fit: Yes, I had my SURF tailgate boxed up and got it in with no issue. With the seats down you're good to go but I will caution you, if you can have the replacement tailgate window rolled down especially if not boxed. Also, that thing is heavy as hell so unless you're hurting for a hernia have some help available. You'll just need to angle it but it will fit. If no box you risk scratching your interior a little so take precautions. Good luck!