Three top teams will provide cars so that Pirelli can test its 2014 tires later this month.
Earlier, some teams objected amid rumors McLaren had put its hand up to run its 2013 car for the official tire supplier at a December test in Bahrain.
Ferrari may already be testing a version of its 2014 turbo engine, according to internet rumors.
Over the weekend, a video emerged on the internet depicting a LaFerrari supercar lapping the Fiorano circuit amid the distinct tones of a turbo engine.
That Ferrari road car, however, is usually equipped with a normally-aspirated V12 engine.
IndyCar and team owner Mark Olson have resolved issues stemming from a race in 2011.
Olson, the owner of Indy Lights O2 Racing Technology, was suspended from the series through the end of 2012. He allegedly encouraged others to break contracts with IndyCar and withdraw from the Indy Lights race in Milwaukee in June 2011.
Roger Rodas, a competitor in Pirelli World Challenge, has been identified as the second victim in the fiery car crash that also claimed the life of “Fast and Furious” actor Paul Walker.
Rodas, 38, was driving a Porsche Carrera GT in Santa Clarita, California Saturday when the sports car slammed into a light pole and tree before bursting into flames, authorities and witnesses said. Rodas and the passenger, Walker, 40, were both pronounced dead at the scene.