21K Original Miles: 1982 Buick Regal Grand National (opens in new tab)

It's a little tricky calling this 1982 Buick Regal a muscle car. You see, it's a Regal with the Grand National "package," and not a fire-breathing turbocharged GN. However, it's still quite rare, with fewer than 220 believed to have been sold when offered as an option. So, the question becomes whether you pay for...