Kammala jumla mai zuwa: Don kakar 1990, duk ƙungiyoyin da ke amfani da Ilmor Chevy Indy V8 an ba su tsarin Gen-3 da aka sake tsarawa kuma ya lashe 15 poles, 16 ya lashe ciki har da
1990 Indianapolis 500, tare da tsere 17 a cikin IndyCar World Series. Don tabbatar da tsarin, an yi amfani da abubuwan haɗin tare da injunan GM a cikin jerin Trans-Am Racing a cikin 1989.