Car was built mid- Jan 1966.
Looking at other cars from San Jose around the same time period I would go with no spray on sealer over the front inner seat belt anchors. You can see a little of the thin, runny sealant in the last picture in my last post.
As mentioned there are some periods with the spray on before the primer sealer. No sealer around the rears inner or outers
Don't recall any sealant on the plates when I took the car apart. It is an over ride car so the outer plates had been moved inward a bit. Just asking because I've always read the inner plates had been sealed.
Well now you seen examples. There has been allot written through all these decades we've been looking at these cars.
Hope this helps you to build a better or at least more original looking car