Could very well be, the 59 Impala 4dr seems to have a padded dash, no clear outline on the speedo housing. The Pontiacs do seem to have a padded dash as well.
"So when you spot violence, or bigotry, or intolerance or fear or just garden-variety hatred or ignorance, just look it in the eye and think... The good outnumber you, and we always will." Patton Oswalt