Hot on his heels are expat Whanganui racer Leighton Minnell and new navigator Louise Blythe who finished runner-up in a new Superboat they put together at short notice, with Whanganui's Rob Coley and Kellie Minnell coming third.
Leighton Minnell was originally not going to do the series in order to focus on his new track he was building in Waitara, which is why wife Kellie has teamed up with Coley - the pair also coming Superboat runners-up during the recent Australian season.
After the retirement of Whanganui's Pat Dillon, the race for the championship is wide open again, especially as seven-time world champion Peter Caughey had a spectacular crash at Meremere in his first big roll in 26 years.
Whanganui's former Group A national champion Richard Murray has taken over Dillon's PPG Hulk, which he now calls the Meaner Machine.
While a former Group A champion driving the proven Superboat championship-winning boat makes Murray another contender, he is still coming to grips with the massive difference in horsepower. He was sixth at Meremere, also having a big roll during the day.
The 400's series has been renamed Group B for this season but Whanganui's defending champions Ross and Shane Travers in their 500hp Radioactive boat want the same outcome, which Ross Travers believes will be harder as there are plenty of new boats looking to catch up to their engine package.
At Meremere, Travers finished third behind Te Awamutu's Patrick Haden and Owhanga's Tim Edhouse after a spark plug lead came off during the final Top 3 shoot-out.
Whanganui's all-girl crew of Donna Thomson and Monica Couper, in Two a Breast, continued their good form at Meremere from last season, finishing fifth on the day.
The other local competitor to this grade is the former national champion Hayden Wilson.
In the Group A class, Gisborne's Blake Briant picked up the win in Meremere, with Hamilton's Ric Burke second and Taupo's Warren Farr third.
The gates are open from 11am at Shelterview when practice rounds begin.