So, I am probably gonna regret this, but I am thinking of building a flathead. I have always been an overhead valve guy, but for some nagging reason, I am collecting flathead parts. I have 2 flatheads to pick up next week. One was a running/driving 41 Ford pickup and the other is a 1940 Mercury that my buddy @guthriesmith has in his pile. The guy with the 41 also has a Mercury crank to give me. My hot rod common sense is screaming at me, HP per cubic dollar, but my nephew is dying to build a flatty car, so I got suckered in. I have a couple of books so far. Any suggestions or things I need to know? Books to buy? Who knows, I may give up Caddys and start building flattys............. Nah, probably never gonna happen.