Matching Engine to Production Date - Pre-'68

Since you’re asking the question I suspect you‘re looking for confirmation the engine wasn’t originally in the car when the car rolled off the production line.

The seller is likely trying to convince you otherwise? Probably asking for a little extra $ by claiming the engine is orignal to the car?

Ask the seller how a body would sit around the factory for 5 months before the engine was installed? They were pumping those cars out like crazy….