There are exceptions on some engines.
If the engine was replaced under warranty for instance. But it would have to be the same size. No replacing a /6 with a 440. Depending on the classification, you would have to produce documentation that the engine was replaced under warranty.
It's getting tougher to get these cars to shows. So the bar get lowered and lowered.
Demon I purchased is a 318 car. I was told by the seller that the block in the car doesn't have some stamping, which he thought could mean a factory replacement...although, it is a 73 block and my car is a 72.
