I've found two Fox body mustangs in this area. One had T-tops, which I really like, it was a 84 for 3000. I also saw a 88 for 4000.

Mustangs are usually going to increase their value the fewer there are of them. Thats why the Fox Body market has really caught on for the last 5 years or so. You can probably expect the 94 through 98 models to catch on next. It all runs in cycles. The only Mustangs I've ever seen that didn't increase in value when their road numbers dropped was anything made from 74 through 78. Pintos and charlies angels mustangs aren't popular.