The 600 Superstock class has been ditched this season due to lack of entries and all 600cc competitors will race together in the 600 Supersport class.
This is an outcome that suits Lewis because he had intended to take the step to race the souped-up 600cc machines this season.
The competition is wide open - national 600 Supersport No 1 Dennis Charlett, of Christchurch, has opted to move up a grade to race a 1000cc superbike, 600 Supersport No 2 Glen Skachill, of Wellington, has decided to take a break from the sport this season and 600 Supersport No 3 Josh McGrath, of Australia, is not crossing the Tasman this year.
Last season's 600cc Supersport No 4, Christchurch rider John Ross, will be a contender though, as will another Canterbury man, BikesportNZ.com ace Seth Devereux, the 2012 national 125GP champion and ProLites 250cc class runner-up moving up the horsepower stakes for 2013.
It's also worth watching out for Invercargill's Jeremy Holmes, Christchurch's Dan Ornsby, Palmerston North's Daniel Kempthorne, Christchurch brothers Alastair and James Hoogenboezem, Auckland's Avalon Biddle, Wanganui's Ashley Payne and last season's Pro Twins class champion Robbie Stokes, of Christchurch, to name a few.
Racing gets underway tomorrow about 10am.