’63 PONTIAC SD-421: SWISS CHEESE LITE!

Production of lightweight ’63 Super-Duty Pontiacs was extremely limited, but high-profile racer Mickey Thompson got the first two. One of those featured here is in the Factory Lightweight Collection. Roger Huntington writing in Hi-Performance CARS is often credited with first using “Swiss Cheese” to describe lightened Super-Duty Pontiacs. It came to him after he counted 120 holes drilled in the perimeter frame of Royal Pontiac’s Catalina, driven by Jim Wangers. A total of 18 aluminum body parts...
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