Eddie,
Sorry I jumped in so soon with wrong info. I didnt know the bell housings would interchange.
I would stick with a small block also, 318 would be the easiest. Very easy to work on, easy to get parts, Millions of them made, Makes good power. I have a very tired 318 (1973 version) in my 65D100 and it still pulls my cuda and farmall without much difficulty. It has your 4 speed in it
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Dodge Sweptline Truck General Discussion