The new-look GS class is set for a significant rebound this year, with no fewer than 19 cars on the provisional entry list for this weekend’s IMSA Continental Tire SportsCar Challenge pre-season test at Daytona.

Combined with the ST class, a total of 28 cars are provisionally entered for the three-day test, which will be run alongside the Roar Before the 24 for WeatherTech SportsCar Championship competitors.

ENTRY LIST: CTSC Daytona Test

Like the WeatherTech Championship entry, which was also released on Tuesday, the Continental Tire Challenge test entry also features a number of to-be-announced drivers.

The GS class, which will embrace SRO GT4-homologated cars for the first time, will see the arrival of the new McLaren 570S GT4 and Ford Mustang GT4, alongside existing GT4 or GT4-based models from Porsche and Aston Martin.

A number of teams will enter multiple cars for the test, while series stalwart CJ Wilson Racing is currently not listed, but expected to appear, with its two Porsche Cayman GT4 Clubsports.

This weekend’s test will mark the public debut of the new Mustang GT4, unveiled at the SEMA Show in November, and to be run by Multimatic Motorsports, with Jade Buford currently as the only confirmed driver.

Reigning series champion Billy Johnson will not be eligible to defend his title this year, as IMSA has put a new rule into place banning all Platinum-rated drivers from the series.

In addition to the previously announced programs from TeamTGM, Automatic Racing, Bodymotion Racing, Muehlner Motorsports, TRG and C360R, the GS class will also see Porsche entries from GMG Racing, RS1 and BGB Motorsports, plus the new two-car MIA/Pfaff McLaren effort.

The nine-car ST class features a mix of returning teams, with more expected for the four-hour season-opener at Daytona on Jan. 27.