Found 71-340 engine

I bought a 71-340 engine today and was wondering if someone has the car to match the block. I am wanting to rebuild this for my 72 Demon, but if someone can prove its for their car, I will sell it to them. The block was just checked for cracks and its perfect. I have the block, crank, mains, J heads with valves and springs, and intake. The number under the drivers side head is GW340P34200134. the last digits are a little difficult to read but I think this is correct.

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