An FYI on paint.
Be aware that B5 in 1970 was EB5 and in 1971 B5 was GB5.
If you put the two paint chips side by side you will see the that there is a difference.
This is also true with the 1970-71 B7 blues.
I have been trying to find out if the B5 and B7 blue paints were different or the same between the 1969
and the 1970 colors.
Could be the same code but different vats. How different are they? Some of the modern paint codes I deal with can have a dozen different variants of the same paint code.
