[berger]

jeff if your car is a late sept/oct build you probably got 70 codes even though your parts were built mid to late 69' my pop is full of 70 codes for my09d 69' x66, I too have a 3.31 BS rear on pop, its written as BS0909G, sept ,9th 69' but written as a 70 cuz' car is so late, you may have a three letter block if engine is orig.