Yeah I guess we have all had cars like that at some time or another and I certainly can relate myself. But if I went through life expecting every car I ever bought to have significant issues, then I'd never buy anything finished for fear that it wasn't done right. I'd only buy basket cases and do everything myself from the ground up.
When I sold my superbee couple years ago, it was beautiful. I had all receipts, tons of photos and I had the ability to answer all questions fully to potential buyers. Couple tire kickers got cold feet but they lost out on a spectacular car. I sold it in the end for the price everyone thought was too high. As a buyer, Sometimes you got to read the seller, examine the photos, and make a judgment call. Eventually, I found the right buyer and we were able to work it all out. Never heard back from him that there was an issue.
Restoring a car like this RT to show level is extremely expensive. So much so that everyone knows it's cheaper to buy one already finished that you trust was done right. Rust buckets scare people off. For good reason...it costs a lot to do the metal work. Can't imagine people would pay the same for a car with rusted out quarters as they would for one that had new quarters just so they could examine the rust first hand. I'd like to imagine that given the choice, they would pick the car that had new quarters, especially if they were both the same price and both available in the same area at the same time.
But I get everyone's point. I'll leave it as is and see what potentials buyers have to say before considering doing any repairs.