You are getting the Pertronix 2 Ignitor part # 91868 for the 6 cyl BMW with stock BOSCH dizzy and the Pertronix 2 45,000 volt Flamethrower coil.The coil is 0.6 ohms and comes in a black case.       This includes the 1974-1978 model cars.It fits the following
1974 3.0csi
1975 530i
1975-76 3.0si, csi exclude cali model
1976-78  530i exc cali model
1977-78  630 csi  exc cali model
We also have the match coils for purchase