I agree,
Fresh Pic's and a great description should help. People don't want to hear about your pile of receipts or how well it was maintained. They will get interested in that once there sold on buying. And they will get sold on buying it when you sell the image, of a Porsche. It sounds cheesy but it works, sell the Porsche image and top-down lifestyle, not the car.
If you can swing it financially I would just keep it as a weekend car, or make it into the ultimate track car.
