I love the look of a flathead - but they weren't/aren't called steamers for no reason. Yes, you can get them so they produce reasonable power (about the same as a 1990 four cylinder Mustang). For that amount of money you can transplant a 302/351W and have real world reliability instead of old world pain. Parts are seldom easily available at your local Advance Auto or for that matter, even NAPA and when they are, expensive. The car has a 6 volt POSITIVE ground system, so there are problems finding simple electrical parts. Now, with all that said, and while you are 'militarized' get it running and have some fun, then later, after some good planning and a mods parts list in hand, then do your engine transplant. For sure we'll help here - either way