In addition to the obvious Continental kit, this Impala was fitted with the top engine available in 1958. The 348 Tri-Power setup is still on the car, though I wish we knew more about the engine.

A stunning first-year 1958 Chevrolet Impala Hardtop, featuring a rare 348 CI Tri-Power V-8 and 4-speed manual, crosses the auction block. The 1958 Chevrolet Impala, a pinnacle of 1950s American ...