Uhhhh, so, I got bored earlier and decided to rip out my back seats. I plan to polish it up a bit with custom panels to cover the seat bottom and the seat back, as well as wrap the seat sides that cover some of the ugly electronics so they aren't white anymore. Just ordered some black trunk liner material to do so.
BUT DAMN those back seats are heavy. 55 pounds including floor mats (weighed on my bathroom scale, hah). Its definitely a lot louder inside the cabin now, but I kinda like it. I can really hear that exhaust note now