Great job! I was born and raised in Kalamazoo and my uncle worked for Checker for 40 years. In junior high school ('64-'66) the local police had a fleet of Checkers with V-8's, 283's, 327's & 350 small blocks. Also, the Upjohn Company, located in Kazoo, had many Checkers for transportation cars painted gray & white like their pill boxes. One was a stretch but don't remember the exact number of doors.