Are all 273 V8's the same?

All of the engines here are 67 automatic cars. The blue primered car I know for a fact is the original engine never touched or out of the car. Bought the car from the original owner been in a truck body in Tennessee for over 35 years.

The pistons are the original pistons from the engine pictured from the yellow car. That car was purchased from member gtsjohn with that original engine came with the car. What I find it hard to believe is that every car we purchased with a 273 had the pistons changed. We even had a 4sp dart GT. Off the road since 71. How could I end up with all the cars with replacement pistons or engines.

There must be another reason for these engines all having flat tops. You would think either Todd or I would at least have one engine with domed pistons out of at least 10 cars and engines. I just don't get it.

I found another early 4 spd 66 Barracuda S for parts for the Valiant we'll see what it has.

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