1965 Dodge Dart Charger

I need help!

On the rear end there should be some stampings on the tube.Both left and right side I think. This is a picture from the magazine "CARS" It shows a 1965 Dodge Coronet drag package car w/426 hemi.

If you see on the picture you can see 283 stamped in yellow on the left side tube. That's the last three digits in the partnumber. I don't know what the "B" stands for.

Now the question is: all I have found in markings are the blue and red paint splot under the carrier and one blue splot in the upper right corner of the carrier. HAs anyone seen or pictured there digit markings on the rear axle tubes? From my point of view the stampings should be blasted off with dirt and mud from the front wheels.

Any help in this is really appriciated.

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