3. 1987 Buick Regal Turbo T
The 1987 Buick Regal Turbo T is a genuine sleeper, often overlooked due to the fame of the Grand National. However, the Turbo T shares the same potent turbocharged V6 and understated style, making it a favorite among insiders. Collectors are starting to recognize its performance credentials and relative rarity. Auction prices for clean examples have recently crept past $30,000, signaling a rise in both interest and investment potential.