The old Cambridge Park and Ride ALX400s were dual door too and they had FlipDot matrix displays.V3D quit because of community backlash. Who knows if he comes back? Besides, its a very specific spec, and the only buses I know of that are like this are Dublin Bus' pre-single-door ALX400s, and Stagecoach 17497. I don't think that specific spec is ever going to be made by legal means. And that's where I'm going to leave it.