From GTPlanet Game Guides

Suzuka East Course

Suzuka East course is a variation of the Suzuka Circuit, consisting of Turns 1&2, the S Curve, Gyaku Bank Curve, and Dunlop Curve as well as adding a turn that brings you back to the last curve of the track.

The track has been featured in Gran Turismo 4 and Gran Turismo 5: Prologue

Uses in Real Motorsport

NASCAR

NASCAR organized a pair of exhibition 100-lap races on the East Circuit (Pictured above), a 1.4 miles (2.3 km) layout which utilizes the pit straight and esses, before rejoining the main circuit near the Casio Triangle. The cars were Winston Cup and Winston West Series cars and the field was by invitation for the two races, run after the 1996 and 1997 seasons. 1996 saw a dark day in NASCAR when during practice, pace car driver Elmo Langley died of a heart attack in the Chevrolet Corvette Pace Car at the esses during an evaluation run. In 1997, rain caused Goodyear to use rain tires in NASCAR for the first time.