Bel- Air is a trim package, you just put all the Bel Air trim on the 210, if you watched the '56 210 buildup on AHR, you will see that all they did was add the trim. Swapping the vin tag is tecnicly fraud, if you take the vin tag off a true Bel- Air and put it on a 210, then sell the 210 cloned as a Bel air, that's fraud, specially being the tag on the door opening isn't the only place that there is a vin, theres a body tag on the cowl, numbers that match the car on the rear end and engine. You would be building a Bel- Air clone, not a Bel- Air.