Or...would there even be a market for them? Since I replaced my cats and headers with Fabspeed parts, should I keep the factory stuff? Which looks perfect btw. Thoughts from others that might have had this idea.
Unless you don't have any spare storage room, I would keep the parts. While it's unlikely these cars will become collectors' cars in the way some older Ferraris have become, it is likely you will sell the car some day, and having the original parts could make the difference between selling it and not.