WV83 is the heaviest GT rod made by Carpenter. It can fish a maximum of 17kg of drag while the WV is rated to 15kg. Mind you, I see WV80s being fished beyond 15kgs all the time without any issues whatsoever.
Also, the WV83 has a extended butt and is a popular model for tall anglers or anglers who have long arms. If you're looking for a Wild Violence, my suggestion is to go for a WV80 unless you need the extra length in the butt.