It is very possible. Slants were used in many applications other than Mopar vehicles. I would not be surprised if Chrysler made some special configurations for applications for other customers. It would not surprise me if Chrysler made some "special" cranks with a even bolt pattern, because a customer wanted to use a particular drive unit. Massey/Furguson was a big customer of Chrysler. If the holes are evenly spaced, a small block flexplate should fit.
