It's been out for a couple months; there is a front one as well. I haven't seen anyone, regardless of platform, buy the rear, but a guy on FB bought the front one.

That said, if I didn't have the Total Tune X-brace, I'd likely buy the Seibon over the factroy GR rear brace as it will weigh FAR less and still provide the majority of the rigidity if they designed it properly.

 

Have the GR brace, it weighs a shit ton. You can get one around $400 if you shop around, but would avoid tbh. Install sucks, a lot of cutting, and it is basically a permanent fixture of the car. Only thing that pushed me to it was the fact it’s an OEM part and didn’t want to have any issues with the latches on the back of the rear seats.

totaltune would probably be the easiest to remove. Only thing that would worry me about the seibon is that it replaces the latch points for the rear seats. Also everywhere that sells it seems to add ~$100 for shipping.