Ahh yes, I see those ones on there. Couple of things, the ones they list as a "350" is actually just called "Premium"
Anyone can bring a car into the country (as we went through the process of getting them elidgible for SEVS), however the process of complaince is another matter and can only be done by: People who have put a car through the compliance process themselves (ie the guy whos is doing mine) or if someone wants to get a complaince ticket for that car they need to go throug the process we are going through now.
What this means is if a car is getting their own complaince expect an additional wait of 5-8 months to get the car on the road (FYI the cost of having a complaince ticket for a car is about $30 000 most of which is the cost of emissions testing)
Those prices aren't too bad on that site, as you can see black ones are the most expensive, also look at the grade of the car, most of those seem to be 4A or 4.5A (higher the number the better). If you don't read Japanese (I don't) its best looking into what options are ticked, or asking the importer to get the guy in Japan to find out.
Factory options on the 350s is things like:
Modellista parts (suspension, wheels, etc)
TRD parts (wheels, diff, exhausts, suspension, intake, electrics etc)
Moonroof
Leather interior (stock interior is "sports cloth", like alcantara with leather bits.
Power 6 way Premium seats with heating and cooling (stock ones are 4 way, no heating and cooling)
To give you an idea mine is a grade 5AA (top level), 47xxx kms, Modellista suspension, leather interior and the 6 way power seats and the purchase cost was close enough to $19 000 aud. On road as you know expecting late 20's.
I've only driven it a few kms but it's awesome, well worth it, just the compliance are killing me.
Diffs are all open from the factory, can be optioned with a TRD one like i said, but they're super super rare.
I'll probably get one (a torsen centre) from a Chaser, I did an open to torsen conversion on my old jzx100 chaser and it required the torsen side shafts too, not sure if the Mark X will.
The diff in the X is the same part number as the SC430 Soarers, and people have put the Chaser/small supra diff centres in them so that's what I'll be going for.