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That was the non RS car. Had replaced block . Had great letter from early owner complaining to gm that a rod bolt came loose and damaged the block. He had asked for a new throw out bearing when the motor was out and dealer forgot/didn't do it. Was upset it cost him $35 to get it fixed!
Don't see any broach marks and the area of the stamping looks like it has been played with (cleaned up) - in addition to the font of the actual VIN stamp looking pretty large relative to that of the engine assembly code stamp from what I see..