The R452 trans has never been sold or imported to North America by a truck manufacture.
It appears that imported diesel work trucks are all autos?
My local Hino dealer, when I checked two years ago, didnt even list the trans or could not get parts or any info on it. First they wanted the VIN number, because without it, they could not help me.
When I asked to look thur their transmission catologs, they treated me like I had no idea what I was talking about and even asked me if I was at the right dealership.
I was able to talk to the lead drivetrain mechanic, and after describing the transmission, was told that he had never seen or heard of one like that.
Marlin