Like dennis did, I am building a 20s roadster with a 4 cyl in it. But using a newer engine it is a 120 cu. in. four out of a SRL 311.
Built a hot rod roadster for another fellow last year powered by a four cyl Ford Ranger engine.
We drive our cars long distances so take the cowards way out and use modern engines. also cheaper.
Your rod sounds like a fantastic project, it will be the star of the show where ever you take it.