A 1964 Ford Thunderbird brings a 390-cubic-inch V8, 300 horsepower and 205 inches of deliberate American excess. A 1991 Mazda Miata answers with 116 horsepower, a five-speed manual and a body fifty inches shorter. On paper it looks like a rout in one direction and a joke in the other, but the two cars were never chasing the same target. Read on for the full side-by-side, and which one actually wins the argument it was built to have.