the MRF Challenge also adopted the car. Dallara has provided the spec chassis to the Indy Lights series, formerly the Infiniti/Indy Pro Series since 2002. For the 2015 Indy Lights season, the car was replaced by the new generation Dallara IL-15, powered by Mazda's 2.0-litre turbocharged MZR-R four-cylinder engine. Dallara also designed the chassis for the Japanese Super Formula series, formerly known as Formula Nippon, called the Dallara SF19. This update to the previous chassis (the Dallara SF14) followed the FIA's new safety guidelines and added the "halo." Endurance car racing In the early 1980s, Dallara was responsible for the construction of the Lancia LC1 Group 6 prototype as well as the later LC2 Group C car, along with Lancia's partner Abarth. It would not be until 1993 that Dallara returned to endurance racing, although very few chassis would take their name. The first project was the Ferrari 333 SP, made for the new WSC regulations in the IMSA GT Championship. The 333 SP, manufactured at Michelotto, won a great number of races both in North America and Europe. Ferrari also hired Dallara to develop the racing version of the Ferrari F50, the F50 GT, financed by French racing driver Fabien Giroix, but the project was aborted before it got off the ground, in 1998. As a consequence, the company secured other contracts and built chassis for Toyota (GT-One), Audi (various incarnations of the R8) and Chrysler (the Oreca-run Chrysler LMP). Later, the Chrysler LMP would become Dallara's customer car available to privateers, known as the Dallara SP1, which has also served as a test mule for Nissan's aborted return to the 24 Hours of Le Mans. All these cars were competitive in prototype sports car racing, with the Audi R8, in particular, becoming the most dominant chassis in modern times at the 24 Hours and the American Le Mans Series. In 2002, they built the GC21 for use in the Fuji Grand Champion Series; the car was based on the company's F3 cars. In March 2008 the first Dallara Daytona Prototype appeared, built-in collaboration with Doran for Wayne Taylor's SunTrust Racing team. In 2015 Dallara was named as one of four constructors for the new LMP2 and DPi class regulations to debut in 2017, using its Dallara P217 chassis. Other notable cars In 2007, Dallara and KTM produced the KTM X-Bow, a sports car with two seats, which was