Expensive souvenir. Don't know who might be interested in such an item, eccentric collector or if it would be useful to the original car. Just a bare block, it would need some specific, verifiable markings that would identify it as specifically from that Daytona. Then, was it a test engine, spare or actually raced at Daytona. Not to devalue it if it is, but I bet the actual race engine was built to the very edge of of the cubic inch limit and any overbore would technically make it illegal. I wonder what the actual car ended up with. It has been restored. More questions!