1971 vin# 1b153632 build date 7-2-70
1972 vin# 2b431164 build date 2-8-72
2 1969 340's, i can't get too them yet, but will post the vins asap...
I can read the build date on one of them, it is 3-12-69. I have one of these engines in my 1972 duster, that is in my avatar and is available.