With most muscle cars now approaching 50 years of age, you never quite know what you’re going to get until you take them apart. Pulling the door panels off this ’64 Impala revealed that the original metal had been hacked up to install a power window kit. Since the Impala’s doors were already painted, and new replacements cost $350 each, Jeff Cameron bought a set of rusty used doors for $50 a piece. Although the door shells on the replacements were rusted, the insides of the doors were still solid. As such, the insides of the replacements were cut out and welded into the original doors. Not only were the used doors cheaper than new replacements, but this trick helped save loads of money on repainting the doors, and the hassle of trying to match the color to the rest of the car.