Looks to be a reasonably asking priced Sport wagon, but what makes the seller believe it has anything to do with a Grand Sport? I was expecting to see a custom Grand Sport Wagon Clone. Not a Sport Wagon. I do Like the car though.
He might have been concerned that there wouldn't be much left of the car afterwards. Regardless of what the seller says I am having a hard time believing the floors and frame are in real cherry shape after sitting for what looks like a bit of time on what appears to be a dirt floor. I don't think I've ever seen a firewall rust like that before.