DZ Block markings found

[47Hammer]

I decided to clean up the engine compartment and install the correctly dated carb I got from Eric last year. While at it I thought now is as good a time as ever to remove and repaint my old nasty looking headers (flat black) and clean the grease and grime from the bottom of the motor and sub frame. When finished with the wipe down we noticed the letters DZ upside down on the driver side of the block, the guy helping me out went nuts!






Here's the before picture with the carb removed...