I'm looking at a 66 427 425HP conv to buy from a local guy. The engine appears original to me. The VIN is clearly correct on the front pad. The cars birthday was oct 12 65. The block was cast I2265(sept) and assembled Sept 28 65. Does this sound OK or are the dates to close? The car is a total basket case now needing total restoration. I think this is the original engine. What are your thoughts on the dates?