recent purchase. I bought a Pioneer head unit and it said that it will not fit in the Z. I hit up the online chat support and asked about it. The gentleman I spoke to said that they tack on a set amount of space behind the head unit for cables and what not, and that it probably fit fine, but it would just be a tight squeeze. That was exactly the case for me. The head unit fit fine, I just needed to be on top of cable management to fit everything back there.