Month of manufacter for the door vin

If you do not have that information< fender tag BC sheet then you can not get it the records for 68 and up car were lost in a fire in the Chrysler record archives. The fire itself didn't do that much damage but the water from extinguishing it destroyed the microfilm. You can get a ballpark IF it has the numbers engine it, as the car would certainly be dated after the engine. General rule of thumb is 2 weeks to about 2 months from engine assembly to install. On the right oil pan rail mid engine is a machined pad 1x3 inches with some numbers on it W0XXXXXX it will be the CARs plant of manufacturer (all 70 swingers were built from Windsor Canada eh. The last 6 should match the VINs last 6. If yes, on the left front side of the block where the head mounts to it are some letters and numbers. should start FW340PXXXXXXXX/ what are those numbers?