5. 1965 Shelby GT350 R: $990,000
Shelby started building Mustangs in 1965 as fire-breathing machines, bringing Ford some much-needed recognition and performance credentials. But these cars were responsible for Ford’s racing success, too. Sadly, they only built 34 “R” models in 1965, selling them to privateers and racing teams all over America.
Those cars were not street legal because they were purely for racing purposes, something they did exceptionally well. The GT350R had numerous modifications, so it was lighter, faster and sharper than the regular GT350. Each example had numerous wins under its belt. In fact, every R model is a precious piece of Mustang and racing history.
Shelby GT350Rs rarely come up for sale, but when they do, they achieve astronomical prices. That was the case in 2012 when a highly-original GT350R sold for almost $1 million. This car had only 4,900 miles on the clock, and the original transmission and engine. All its essential parts were well-known among Mustang aficionados. They raced it extensively but eventually put it into storage. This helped preserve its original condition, which affected the price.