Exedy Part #s 1ZZ-FE Manufacturer: TOYOTA Model: Z SERIES (TOYOTA) Year: 01-on Application: ZZE122, 1.8Ltr, 1ZZFE, 5 speed Size & Spline OD x No of Teeth: 212 x 24.1 x 21 Standard Clutch Kit Clutch Kit: TYK-6932 Cover Assembly: TYC549 Clutch Disc: TYD035U Release Bearing: BRG2248 SPORTS TUFF Clutch Kits (Australian made for improved performance) Heavy Duty Kit: TYK-6932HD Heavy Duty Button Kit: TYK-6932HDB Heavy Duty Cushion Button Kit: TYK-6932HDCB EXEDY Racing Clutch (Made in Japan) Sports Ceramic: TYK-6932SC 2ZZ-GE Manufacturer: TOYOTA Model: Z SERIES (TOYOTA) Year: 01-on Application: ZZE123, 1.8Ltr, 2ZZ-GE, 6 speed Size & Spline OD x No of Teeth: 212 x 24.1 x 21 Standard Clutch Kit Clutch Kit: TYK-7334 Cover Assembly: TYC613 Clutch Disc: TYD035U Release Bearing: BRG2248 SPORTS TUFF Clutch Kits (Australian made for improved performance) Heavy Duty Kit: TYK7334HD Heavy Duty Cushion Button Kit: TYK-7334HDCB EXEDY Racing Clutch (Made in Japan) Sports Ceramic: TYK-7334SC Basically the only Difference between the 1zz and 2zz kits are the clutch covers. The Clutch kit for the 1ZZ's has been around for years as this it the same clutch as used on the 4AGE's since the late 80's