I believe the original one, at least when it was originally supplied by SOS was the Alpine *580. I have the *760. I'm not sure what was in the OEM kit in Japan - I assume some Alpine variant.
Minor mods are required to the pod - just removing a couple of small plastic ribs on the inside to allow the monitor bezel to sit flush against the inside face of the pod. No mod is required to the monitor. Also, however there is no bracket to hold it in place, so you need to fabricate something. I cut a strip of MDF that wedges it in place and glued that to the inside of the pod - no glue on the monitor itself, just between the wdge & the pod. (I originally used hot glue but up on the dash it will get hot enough to soften it again so used epoxy second time around)
My pod just sits in place without the screws - didn't want to screw through the dash! It doesn't move so I'm fine with that the way it is.