In 1976 a final shipment of 1975 model year 17s was made .
Stock piled prior to the introduction of ADR 27A emission controls , these vehicles , again due to their high price , sold slowly through until 1978 .
In 1976 a final shipment of 1975 model year 17s was made and stock piled prior to the introduction of ADR 27A emission controls , these vehicles , again due to their high price , sold slowly through until 1978 .