Paradise Valley Raceway president Steve Layne said each year they invite drivers from overseas, giving the event a world status.
The three-race final will be staged tomorrow night with a repechage also being held tomorrow prior to the final.
The driver with the most points during the three-race final will be crowned champion of the New Zealand Welding School World 240s Superstock Championships.
Three-time New Zealand champion Craig Boote will make his first appearance at the World 240s Superstock Championships since it moved to Rotorua.
Meanwhile, the three overseas drivers racing at the event all hail from England.
Frankie Wainman Jnr has a lot of experience in the World 240s and will be an overseas driver to keep an eye on.
The three English drivers have automatically qualified for the final tomorrow.
The Rotorua Rascals stockcar team, who were recently crowned New Zealand champions, will also be racing tomorrow night.
They will look to defend the Ross Orr Memorial Trophy, which is hotly contested between Rotorua and Huntly's stockcar clubs.