In 1976 from Katane 1990 was derived the 1904 sport version that complied with the regulation of Group 4 class 8 of the FIA regulation.
The 1904 was equipped with front and rear air intakes to promote the undertray and an wing at the rear.
The interior obviously consisted of two sports seats.
The 1971 cc engine was supercharged with a single turbo and was branded with the name 217/150 (TS, touring sport).
acceleration from 0-100 was 8.59s better than that of the road model which was 10.40s.
1904 was produced from 1976 to 1981
