I've never claimed it was rust free, just less rust than normal. It's got a heck of a lot less than my Charger. This one actually has a trunk floor. Lol. But to the best of my knowledge, he's out of state. And I agree, if he can't see it in person, then hire someone. It just struck me as odd to want me to sand it and get before and after pics. And I understand what you're saying Bruzzilla, a buyer has to beware, but I just get the impression it's more of the gold for lead price scenerio.
Again, it is all in the eye of the beholder. We used to encounter this problem a LOT when I was working at Ford. Someone would drive their car to the dealership to trade it in, and they would be standing there with their freshly printed out KBB self-evaluation of their car and what they felt was an appropriate trade-in value. Then we would evaluate their car and come up with a lower offer and these folks would shove the KBB printouts at us and yell about how we're trying to rip them off.
We would then go through their printouts and show them how they had selected Excellent or Very Good for condition, and we rated their car as poor. They would start going on and on about how their car wasn't in poor shape, but the reality is car owners get used to things and accept them over time, and these same things aren't accepted by new owners. A slight tear to a seat that happened three years ago and the owner never notices anymore is going to be a "that's gotta be fixed!" problem for a new buyer. A tiny nick in the paint that an owner quit seeing years ago is a HUGE scratch to the buyer and becomes another "that's gotta be fixed!" thing. And every one of those "that's gotta be fixed!" things ends up being a couple hundred dollars of labor and parts that have to be expended before a buyer will accept the car. So it's pretty normal for a buyer to look at something they've grown accustomed to and say, for example, "it's less rust than normal, and it's got a lot less than my Charger", and for a buyer to look at it and say "that's a damn rustbucket!"
So you really need to ask yourself are you, like most owners, applying a gold standard to your car that's based on your experience, affection, and attachment to it rather than a detached, unbiased, empirical analysis of the car? You see a lot of rust, but not as much rust as on other cars. He's seeing a lot of rust and a lot more than he's seen on other cars, and wants to know if there's even more, and I think that's a reasonable request.
I can tell you that when I spent a couple of years looking at 73/74 Road Runners a few years back, if I saw any sign of rust on the quarters, any sign at all, I passed on the car. The owners would say it was minor, easy to fix, no problem, barely there, not a big deal, etc., but I knew if there was any rust damage visible, there was a LOT more that wasn't visible when it comes to quarters. That car could have been gorgeous everywhere else, but I knew the cost of repairing rust damage on these cars can quickly outweigh the purchase price of a car with no rust damage, so buying a car with any damage made no sense. Once again... the seller's perspective vs the buyer's perspective.