Look what one of my customer's has on his property! Not an a body

Apparently this one is a 73 coupe 440 four barrel model and there were about 1500 made total. I tried to open the hood but the cable to release it was frozen[Rusted}. The leather seats cracked when I nealed on them to release the cable.Later I asked him about the car in more detail and that's when he told me the engine was out of the car and fully disassembled, probably at his shop, but he said it was all there and ran fine before he tore it apart because the muffler was clogged . The owner said they made a model that was an all wheel drive convertible model and was really rare.