The Sprint exhaust originally came on a Rekord Sprint in '68, not a Kadett. And that car had twin downdraft Weber 40 DFO's on a special intake rather than a single downdraft intake and carb.Gary said:I believe the "sprint" was also available around '68 in a special version of the Kadett. That may explain your intake/exhaust combo. Is that engine a 1.9 or a 1.5 from the Kadett? The first 3 digits on the engine number will tell.