After blowing up the picture I think the "K" looks like a lighter strike. If it were a "R" it would match the 1976 year but that is just a W.A.G. on my part.One number does not supersede the other, they complement one another. The engine code V0120CKT was stamped at the engine assembly plant and the partial VIN 16J20095 was stamped at the car assembly plant. Your codes are in conflict. You need the block casting date which is located to the right of the block casting number to make some sense. I'm no expert but your engine code looks suspect.
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