Yep. They're all related in most respects. The cx, ci, vx, vi, 600/650/700/800 series machines are all alike for the most part. All of them, save for the 700, have three Nubus slots. They also have the same size logic board. Want a Quadra 800 that looks like a IIcx? Take said 800's board, swap it in, after modifying the back panel's port holes. Want a IIvi that will happily run programs that are 32 bit dirty? Take a IIcx board and swap it in, then add a Nubus video card.