The Slant 6 became my go-to engine for pizza delivery vehicles back in the seventies. I think I bought every used Dodge Dart I could find and for a while, I probably kept more than a dozen of them in service. I tried the Duster, but with teenagers behind the wheel, that body style had a tendency to roll over.

When I heard that #5 rod knocking, I knew the engine only had another month of life left in it and I'd go on the hunt for a replacement.
I never did find the '69 440 Dart that I wanted for myself.