Another make that clung to the 250 is the often forgotten Checker They started off running Continental power and then switched to Chevy exclusively in '65. Not sure about the percentage of production that was I6 versus V8 as they shipped both.
What was the last year Checker used the Chevy inline six? Was the phase in of emissions controls different for the cabs than the regular cars? I'm curious now, I may have to find a Checker website.
