to be different try a MEL engine.they cam in mercury,edsel,lincoln cars.they came in 383,410,430 and 462.plus there was a y-block type in the merc's and lincolns,trucks that came in 302(truck),317,341,and 368.versions.a 3x2 intake was available for 383 and 430. there was also a 2x4 setup for the 368. the y-block type has no parts in common with the 239-312 series.even they look alike.