I saw a post a few days ago where they now make an inline 4-banger called a DRC-IV, based on DRC2 technology, 4.900 bore spacing that's on DRCE spacing and uses a single head made for a V-8. Huge bore, long stroke, I'm sure it'll make massive torque for only having 4 cylinders. Line up next to the fart pipe crew on a 4-cylinder only race night, show 'em what American ingenuity can do.