[Casey B]

I thought that the engines that were light blue were the ones that came from the overhaul facility in Quebec...?
The 1967 M38A1 I had had one of those engines in it and it was a very light blue to grey.
The engine colour in my 53 Ford Willy's is that same green dark olive and black. To my knowledge with paperwork it has never been out of the truck.
Maybe due to the year?

Here is a photo of my hurricane before I did anything to it and that wasn't much.

Best of luck and spring is right round the corner!