the guy in the cowboy hat looks like Speedy Bill from Speedway Motors, he has the largest collection of these kinds of esoteric concept motors in the world. i wouldn't be surprised if he owns one of the 2 cassiopia motors as well as that 289 SOHC motor. i think that 289 SOHC motor may have also been a development mule/prototype/predecessor of the gurney eagle/weslake motor as well.