She's a '63. My original intent was to restore as close to factory appearance as possible with as many "modern" upgrades as that would allow, then use it for a truck. Once done, she was too pretty, and now too valuable, to use as I intended. Along with 12v electrical, disc brakes, 2110 cc motor, and freeway geared trans, I installed electric blowers under the rear seat for a recirculating heating system. I discovered, too late, that in order to replace the engine fan air, the blowers would have to run full-time to prevent overheating of the heater boxes, even when cabin heat was not needed. I am building a duct system that allows the use of both electric fans (when needed for cabin heat) and engine air. The butterflies will allow shutting off the duct from the electric fans when they're not in use. I'll be posting up pictures soon, assuming the welds are suitable for family viewing.