Not until 1969 were the VIN's put on the body. The SO# is on the broadcast sheet as well as the fender tag and the used as the body stamps, more of an internal Chrysler thing than anything. Sometime in 68 the VIN numbers were put on the engine and trans, then in 69 they made it to the body. As for as significance, not really sure of what you are asking?

The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.

JB Rhinehart, Realist

A-Body's RULE!