Hi Carlos
This dosn't help you a lot, the Moriwaky page have no history area (nice try Sam

)
the VX 7zero was the bike moriwaki bulit 1989 around the legendary RC30 V4 gear drive cams engine)
a beautiful bike with a superb aluminium fram and a upside down fork(what was actualy not as good as the normal one HRC was using in the RVF)
only 9 of this beautiful bikes was built manly for the open TTF1 world champoinship and enduranc races like the 8 houers of Suzuka.
One of them was driven by MalCampel the legendary Australien rider at the 8 hours 1992 on the 12 position what is exorbitant for a privat team
I now this bike very well, when I was 20years I worked as mechanic by the biggest Swiss Honda Dealer Mühlebach, and he and his main Sponsor PAMO had one of this bikes for the Swiss Superbike Champion driven by Hubi Meier, how wone also the titel
so I could see the bike any day and here it on the dynotester(unforgetable)
that is the link you found all the result of japanish bike racing
http://www.motoracing-japan.com/index.html
I tried two years ago to buy one but unfortunatly it was sold to austria where must by a guy how owns now two of this bikes
also I dont know where the others are located, asking moriwaki
they don't give out adresses(what is untherstanable)
so thats it about the Zero 7VX
Regards
Mauri