66 dart vin help

The two barrel cars had a fender emblem that said " 273 V eight" and the "charger" ( aka "Commando") said 273 four barrel.

Does it really matter if it's a four barrel engine originally?
I don't think it would have any effect on how much I would bid.

Not quite. The two barrel 66 GT got the V8 emblem. It did not have 273 in it or the word "eight".