That engine, the four-cylinder, 134 cubic inch "Go-Devil", was the brainchild of Willys chief engineer Delmar "Barney" Roos, who joined the company in 1938 after spending time at Pierce Arrow ...

Well, anyone who owns a flattie with the Go-Devil engine in it can tell you that this is on a good day downhill with the wind at your back. Enter Advance Adapters' excellent Saturn Overdrive.