That's been for sale on ebay for quite some time. The owner is out of his mind. I can only imagine what he'd want for it if it were RA IV.
I don't mean to critique the car but he boasts its all original blah blah blah but has in the ad this > "transmission does not have a VIN # stamped on it but does
appear correct &
may be original to the car."
If its all original then he would know for certain. For that kind of mola, every part on that car should be authenticated.