Formula Three - Wikipedia
https://en.wikipedia.org/wiki/Formula_ThreeFormula Three cars are monocoque chassis, using slick racing tyres and wings. Currently, Dallara manufactures the overwhelming majority of F3 cars, though Mygale, Lola (formerly in partnership with Dome of Japan), Arttech, and SLC also have a limited output. In many smaller or amateur F3 racing series older cars are frequently seen. Usually these series are divided into two or more classes, to allow more participation.
Ligier JS F3 - Ligier Automotive
https://ligierautomotive.com/en/vehicles/single-seatersLigier Automotive was selected by the FIA and SCCA Pro Racing to design and produce the single-seater dedicated to the 2018 FR Americas Championship. Its carbon chassis complies with the FIA F3 Regional regulations coming into force in 2018 and incorporates the halo in its design like the F1s in 2018. The Ligier JS F3 is equipped with Hankook ...
W Series (championship) - Wikipedia
https://en.wikipedia.org/wiki/W_Series_(championship)The W Series features mechanically identical cars. In 2018, it was announced that the inaugural 2019 season would use the Tatuus–Alfa Romeo F3 T-318, homologated by the FIA for use in Formula 3 in Formula Regional European Championship, powered by Autotecnica Motori-tuned Alfa Romeo 1.8-litre turbocharged engines, and equipped with a halo cockpit safety device.