Dodge didn't make an OHV. M&B did. Along with Roof and maybe others. My engine is close to the "Fast Four" but mine has the early, stupid, single port intake. And the early, neat, aux-drive for the distributer instead of through the head and the round bellhousing flange, starter mount instead of the later cut off end of the block like a 235 Chevy or something. Mine is like a 292 Chevy. The head is a little strange by todays standards. And I had a lot of ideas for running a flathead. But I have it so I'm going to run it.