An additional six entries have been confirmed for the California 8 Hours at WeatherTech Raceway Laguna Seca, with nearly a dozen total GT4 cars now due to take part in the Oct. 26-28 race.

Newly crowned Pirelli World Challenge GTS champions GMG Racing have confirmed a single-car Audi R8 LMS GT4 entry for Andrew Davis, Jason Bell and team owner James Sofronas, who swept all three of the PWC titles this year.

PF Racing, meanwhile, will field a Ford Mustang GT4 for Jade Buford, Scott Maxwell and James Pesek, with Ian Lacy Racing confirming Drew Staveley, Ian Lacy and Frank Gannett in one of its Ginetta G55 GT4 cars.

BMW will be represented by at least two M4 GT4 entries, fielded by Stephen Cameron Racing and RHC Jorgenson-Strom Racing, with Murillo Racing committing a Mercedes-AMG GT4 for Matt Fassnacht and former PWC TCA champion Christian Szymczak.

Additionally, Rearden Racing has entered an Audi R8 LMS GT4 with a yet-to-be-determined driver lineup.

The confirmed additions join the previously announced entries from Team Panoz Racing and Automatic Racing for the Intercontinental GT Challenge season finale.

It will result in at least seven GT4 manufacturers being represented on the grid, which will also feature GT3, Cup class and TCR machinery.

While an entry list has not yet been released, it’s understood a total of 31 cars are currently entered.