I don’t see how that’s possible with prototypes. Maybe they’re going to expand the GT classes and allow more power on the top class. I think the 600 hp factory GT is actually detuned to around 450 hp by regulation and BOP rules. Make GT1 wide open - run what you brung with no BOP rules.
The FIA has suggested the 2020 cars return to more of a GTP regulations (such as http://tech-racingcars.wikidot.com/mercedes-clr). The cars will be bigger with 2 seats in the cockpit, spec hybrid system in the front, and up to ~520-550hp from the engine). And also to have 1/4 budget of the current LMP1 factory effort.
hey will come into effect for the 2020-21 WEC season and make their 24 Hours of Le Mans debut in June 2021.
Several aspects of the design are open, including free engine architecture and the ability to run any number of cylinders with either a turbocharged or naturally-aspirated design.
The cars will have an overall weight of 980kg while weight distribution will be capped, along with a defined maximum fuel flow, controlled efficiency and other regulations to prevent expensive development.
An electric motor will be mounted on the front axle with a fixed performance of 200 kW, giving the cars a four-wheel-drive layout, while the ICE engine’s maximum performance target is 520 kW.
Each car will have two seats, a bigger cockpit than the current LMP1 machines, a wider windscreen and a roofline more consistent with road cars.
Manufacturers will be required to make their hybrid systems available for privateer teams to lease at a yet-to-be-determined cost cap, while any manufacturer or company can build its own hybrid system, which will be homologated by the FIA and ACO.