Need help assessing this 1965 Dodge Dart 270 4-dr sedan

An update: the owner's asking price is $5000. I offered $2400 and he balked. I raised it to $3000 and he says he's got an offer from another interested party for $4000 - but that guy's out of town. He said he's got too much money in it to accept my offer. So I'm not sure what to do next. I have a feeling he'd take $4000 from me if I offered to match the other guy. Is that too much for this car?

Also, here's a photo of the only number I could find on the engine block. Does it mean anything?

I'd appreciate your thoughts on the price... Thanks!

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